[![2d interactive map of PubMed articles on vaccination produced by Lingo4G text clustering engine.](https://carrotsearch.com/assets/carrotsearch/showcases/lingo4g-explorer-topics-dark.jpg)](https://carrotsearch.com/lingo4g/) 3.5k PubMed article abstracts matching the _vaccination_ query presented as an interactive, zoomable 2d map. Each dot represents one article, textually-similar similar abstracts are spatially grouped together. Colors depend on the cluster the abstract belongs to. Phrases describing the selected spatial grouping are highlighted in the original text of abstracts. # Text clustering & visualization software components for innovative apps, services and organizations ## Real-time text clustering [![Carrot Search Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) Organizes text documents into clearly labelled thematic groups. Accurately, on-the-fly, without knowledge bases. [Learn more about Real-time text clustering](https://carrotsearch.com/lingo3g/) ## Large-scale text clustering [![Carrot Search Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) Identifies clearly labelled themes among millions of documents and gigabytes of text. Automatically, in near-real-time. [Learn more about Large-scale text clustering](https://carrotsearch.com/lingo4g/) ## Search results clustering [![Carrot Search Carrot2 logo](https://carrotsearch.com/assets/carrotsearch/logos/carrot2-horizontal.svg)](http://project.carrot2.org) Popular open source search results clustering APIs and tools. Commercially friendly BSD license. [Learn more about Search results clustering](http://project.carrot2.org) ## Voronoi treemaps [![Carrot Search FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) Treemap visualization with non-rectangular layouts. Innovative, addictively interactive. [Learn more about Voronoi treemaps](https://carrotsearch.com/foamtree/) ## Multi-level pie chart [![Carrot Search Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) An interactive multi-level pie chart visualization. Fun to play with. [Learn more about Multi-level pie chart](https://carrotsearch.com/circles/) ## 2D point collection visualization [![Carrot Search dotAtlas logo](https://carrotsearch.com/assets/carrotsearch/logos/dotatlas-horizontal.svg)](https://carrotsearch.com/dotatlas/) Map-like visualization of 2D point collections. Interactive, blazing fast. [Learn more about 2D point collection visualization](https://carrotsearch.com/dotatlas/) # Try all products for free Use fully-functional Lingo3G and Lingo4G for 2 months. Branded visualizations free forever. [Get a trial](https://carrotsearch.com/free-trial/) # Powering 100+ innovative apps and organizations around the globe ![AcclaimIP logo](https://carrotsearch.com/assets/carrotsearch/customers/acclaimip.png) AcclaimIP is the fastest, most intuitive patent analytics and landscape solution available. AcclaimIP uses Lingo3G to cluster patent documents. Not only are the clusters a great way to organize and visualize large sets of patents, but the theme extraction doubles as a keyword tool giving our customers yet another way to discover important search terms. **Matt Troyer**, President at [AcclaimIP](http://www.acclaimip.com), USA ![HowardsHome logo](https://carrotsearch.com/assets/carrotsearch/customers/howardshome.png) HowardsHome is the leading company for online news syndication in the Netherlands. I've shown two board members of our client company what our FoamTree-powered app does. Amazing what a good visualization can accomplish :-) **René de Vries**, Managing Director at [HowardsHome](http://www.howardshome.com), The Netherlands ![eTools logo](https://carrotsearch.com/assets/carrotsearch/customers/etools.png) eTools is the transparent Metasearch Engine built in Switzerland. We chose Lingo3G because it exceeded our expectations in several ways: easy to integrate, many configuration options and extremely fast and lightweight. Besides that, we are always pleased with the professional care and responsiveness of the Carrot Search team. **Stephan Schmid**, CEO at [Comcepta](http://www.comcepta.com/), Switzerland ![EPPI-Centre logo](https://carrotsearch.com/assets/carrotsearch/customers/eppi.png) EPPI-Centre uses Lingo3G in its systematic reviewing software, EPPI-Reviewer. A recent evaluation found overwhelming support for using Lingo3G, enabling users to make connections that they had not been able to predict in advance, “broadening understanding”, and so leading them to important new places. **Dr James Thomas**, Associate Director, [EPPI-Centre](http://eppi.ioe.ac.uk/cms/), Social Science Research Unit, Institute of Education, London [![National Institutes of Health logo](https://carrotsearch.com/assets/carrotsearch/customers/nih.svg) ![SurveyMonkey logo](https://carrotsearch.com/assets/carrotsearch/customers/surveymonkey.svg) ![CallMiner logo](https://carrotsearch.com/assets/carrotsearch/customers/callminer.png) ![Verint logo](https://carrotsearch.com/assets/carrotsearch/customers/verint.png) ![CareerBuilder logo](https://carrotsearch.com/assets/carrotsearch/customers/career-builder.png) ![Bayer logo](https://carrotsearch.com/assets/carrotsearch/customers/bayer.png)](https://carrotsearch.com/customers/) ![Gartner Cool Vendor 2015 logo](https://carrotsearch.com/assets/gartner/cool-vendor-2015.png) Carrot Search was designated a "Cool Vendor" in [Gartner's 2015 "Cool Vendors in R&D for Manufacturers" report](http://www.gartner.com/document/3025917). The Gartner Cool Vendor Logo is a trademark and service mark of Gartner, Inc., and/or its affiliates, and is used herein with permission. All rights reserved. Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner's research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose. --- # Highly-interactive multi-level pie chart [Free trial](https://carrotsearch.com/circles/free-trial/) [Live demos](https://get.carrotsearch.com/circles/latest/demos) ![Carrot Search Circles: an interactive visualization of multi-level data, such as numerical value breakdowns or tree-like structures.](https://carrotsearch.com/assets/carrotsearch/screenshots/circles-showcase.png) Circles is a great tool to explore all kinds of hierarchies and data breakdowns. This screen shot is a visualization of 500 web search results for query _data mining_ clustered into a 3-level hierarchy. Clustering of search results was obtained from the [Lingo3G clustering engine on-line demo](http://search.carrotsearch.com/carrot2-webapp/search?query=data+mining&results=100&source=etools&algorithm=lingo3g&view=circles). - [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) - [Live demos](https://get.carrotsearch.com/circles/latest/demos) - [How to order](https://carrotsearch.com/circles/how-to-order/) - [Free trial](https://carrotsearch.com/circles/free-trial/) ## Effortless exploration of data breakdowns Circles is an interactive visualization of multi-level data, such as numerical value breakdowns or tree-like structures. Written in JavaScript, for desktop and mobile. ![](https://carrotsearch.com/assets/flaticon/idea.svg) ### Instant overview Top-down overview of your data. Large groups, the smaller ones, all in one picture. ![](https://carrotsearch.com/assets/flaticon/target.svg) ### Rapid exploration Explore the data points of interest using the zoom-in feature. ![](https://carrotsearch.com/assets/flaticon/devices.svg) ### Great on desktop and mobile Circles is a JavaScript component, works in any modern browser, desktop or mobile. ![](https://carrotsearch.com/assets/flaticon/png-file-format.svg) ### Export as JPEG or PNG Save the visualization as an image you can embed in, for example, a Word document. ![](https://carrotsearch.com/assets/flaticon/tree-of-rectangles-foliage.svg) ### Complements Lingo3G Add a new look and more interaction to clusters from Lingo3G or Lingo4G. ![](https://carrotsearch.com/assets/flaticon/css-code.svg) ### JavaScript API Integrate Circles within minutes using a simple JavaScript API, 21k gzipped. ## Superb results out of the box Complex layouts and interactions require a little customization code. We can help with that. ![Multi-level pie-chart](https://carrotsearch.com/assets/carrotsearch/features/circles/default-view.png) ### Multi-level pie-chart Visually pleasing hierarchical pie-chart with properly curved labels and rich interactions. Circles is a visually pleasing hierarchical pie-chart with properly curved labels and rich interactions. The screen shot shows Circles visualization of the 3-level cluster structure generated by Lingo3G for 500 web search results for query _data mining_. View the [settings panel demo](https://get.carrotsearch.com/circles/latest/demos/tweakpanel.html) for the interactive version. ![Zooming](https://carrotsearch.com/assets/carrotsearch/features/circles/zooming.png) ### Zooming You can zoom into one or more groups to inspect the contents more closely. When you double click on a slice, it will expand to take more screen space and show its child slices in more detail. ![Configurable colors](https://carrotsearch.com/assets/carrotsearch/features/circles/custom-colors.png) ### Configurable colors By writing a few lines of code you can customize the colors of slices and labels. You can color the slices and labels in your Circles visualization in an arbitrary way. All you need to do is to write a callback function that will return the color for each group. The screen shot shows the [settings panel](https://get.carrotsearch.com/circles/latest/demos/tweakpanel.html) demo with a zebra-stripes color callback enabled. ![Multilingual and emoji-friendly](https://carrotsearch.com/assets/carrotsearch/features/circles/multilingual.png) ### Multilingual and emoji-friendly Supports all special characters your browser can display, including emoji. FoamTree can display all the characters your browser can render, including Arabic, Chinese, Japanese, Korean as well as emoji. View the [settings demo](https://get.carrotsearch.com/circles/latest/demos/tweakpanel.html) and choose the multilingual data set there for an interactive version. ![Extensive tuning](https://carrotsearch.com/assets/carrotsearch/features/circles/settings-panel.jpg) ### Extensive tuning Settings panel for tuning of visual properties and exporting them to your code. You can tune various aspects of the look and behavior of Circles, including colors, fonts, border widths, ring sizing, animation types and speeds. The screen shot shows the [settings panel demo](https://get.carrotsearch.com/circles/latest/demos/tweakpanel.html) with settings altered to color the slices based on a yellow-to-green gradient. ![Layout customizations](https://carrotsearch.com/assets/carrotsearch/features/circles/custom-layout.png) ### Layout customizations By changing sizes of individual slices you can implement non-standard layouts. You can write a small piece of code that governs the sizing of individual Circles slices and thus customize the layout of your pie charts. The screen shot shows an example that abuses Circles API a little bit to create a [spiral chart](https://get.carrotsearch.com/circles/latest/demos/spiral.html). Another great example of custom layout is the [US demographics](https://get.carrotsearch.com/circles/latest/demos/infographics.html) demo. ![Animated interactions](https://carrotsearch.com/assets/carrotsearch/features/circles/animations.png) ### Animated interactions Data can enter and leave the visualization stage in a number of animated ways. Circles uses animated transitions for zooming, revealing and replacing the visualized data. ![JavaScript and JSON API](https://carrotsearch.com/assets/carrotsearch/features/circles/api.png) ### JavaScript and JSON API Get started within minutes. Circles is a small JavaScript library, 25kB gzipped. To get your first visualization, pass a HTML element and some data to Circles constructor. See [Circles API reference](https://get.carrotsearch.com/circles/latest/api) for detailed documentation of all available options. ![](https://carrotsearch.com/assets/flaticon/computer.svg)[ ### See live demos ](https://get.carrotsearch.com/circles/latest/demos) ## Questions & Answers ### What are the requirements of Circles? Circles requires JavaScript and HTML5 canvas support. It will work on any major browser, including Chrome, Firefox, IE10+, Edge and Safari. ### Will Circles run on mobile devices? Yes, Circles will run on Android and iOS phones and tablets. Touch-enabled laptops are also supported. ### Does Circles require Lingo3G or Lingo4G to run? No, Circles can be used independently of Lingo3G or Lingo4G. Of course, it will also be an excellent tool to visualize clusters you get from our clustering engines. ### What hierarchy depth does Circles support? There is no limit on the hierarchy depth, but all levels must fit on screen at the same time. For very deep hierarchies your code may need to show only a few levels initially and replace the visualization with lower levels on user's request. ### How is Circles licensed? The most common Circles licensing scenarios are for use in SaaS applications and Intranet deployments. We require one Circles license per one SaaS application, regardless of the number of servers handling the application and the number of users. Similarly, we require one Circles license per deployment in one Intranet, regardless of the number of servers and users. Each license comes with 12 months of software maintenance, covering support and all upgrades. For non-typical deployment scenarios, such as OEM distribution, please get in touch. ### What is the cost of a Circles license? Please [contact us](https://carrotsearch.com/contact/) for a quote. ### Can I get a discount? Yes, we offer a 50% discount for holders of valid Lingo3G or Lingo4G licenses. ### Is there a free version? Yes, you can use the demo version, which displays Circles logo, free of charge. The demo version is otherwise fully-functional. ## Next steps - ### Browse Circles documentation - [API overview](https://get.carrotsearch.com/circles/latest/api/#api-overview) - [First steps](https://get.carrotsearch.com/circles/latest/api/#first-steps) - [Events](https://get.carrotsearch.com/circles/latest/api/#events) - [Parameters](https://get.carrotsearch.com/circles/latest/api/#attributes) - ### Try and order - [Live demos](https://get.carrotsearch.com/circles/latest/demos) - [Free trial](https://carrotsearch.com/circles/free-trial/) - [How to order](https://carrotsearch.com/circles/how-to-order/) --- - [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) - [Live demos](https://get.carrotsearch.com/circles/latest/demos) - [How to order](https://carrotsearch.com/circles/how-to-order/) - [Free trial](https://carrotsearch.com/circles/free-trial/) # Circles free trial Trial version displays a small Circles logo in the visualization area. Otherwise, it's fully functional. (If you don't mind the logo, feel free to use the trial version for as long as you like. Also for commercial projects.) [Download trial](https://get.carrotsearch.com/circles/demo/package) ![](https://carrotsearch.com/assets/flaticon/arrows/turn-right-arrow-with-broken-line.svg) ![Circles with branding logo](https://carrotsearch.com/assets/carrotsearch/features/circles/attribution.png) 1. ## Download The latest trial package is available at: [https://get.carrotsearch.com/​circles​/demo/package](https://get.carrotsearch.com/circles/demo/package) When the download completes, follow the instructions presented on the download page. **Existing customers**: The package available from this page contains Circles with locked branding options. If you hold a Circles license, download the latest unlimited version from: [https://secure.carrotsearch.com](https://secure.carrotsearch.com) 2. ## `npm`, `pnpm` or `yarn`? Add Circles dependency to your project: `[@carrotsearch/circles](https://www.npmjs.com/package/@carrotsearch/circles)` See the following resources to get started with the API: - [Circles API quick start](https://get.carrotsearch.com/circles/latest/api/#first-steps) - [Circles API overview](https://get.carrotsearch.com/circles/latest/api/#api-overview) 3. ## Questions? If you have any questions or problems with Circles, please do get in touch. Some pointers you might find useful: - [Code examples](https://get.carrotsearch.com/circles/latest/demos): complete pieces of code showing how to use specific features. - [Circles API overview](https://get.carrotsearch.com/circles/latest/api/#api-overview) - [Getting started](https://get.carrotsearch.com/circles/latest/api/#first-steps) - [Options reference](https://get.carrotsearch.com/circles/latest/api/#attributes) ## Ready to purchase Circles? Let us know by e-mail how many licenses you'd like. [How to order](https://carrotsearch.com/circles/how-to-order/) ## Questions & Answers ### Do I need a trial license to evaluate Circles?[](#do-i-need-a-trial-license) No. The trial version is perpetual and does not require a license file to run. Instead, it displays a small Circles logo in the visualization area. ### Can I use the demo version in a commercial project?[](#can-i-use-the-demo-version-in-a-commercial-project) Yes, feel free to use the demo version in your project free of charge. The only requirement is that you must not remove or obscure the Circles logo the demo version displays. ### Can I put my own logo on the visualization?[](#can-i-put-my-own-logo-on-the-visualization) The licensed version allows changing or completely removing the logo. The demo version always displays Circles logo and does not allow to remove it. --- - [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) - [Live demos](https://get.carrotsearch.com/circles/latest/demos) - [How to order](https://carrotsearch.com/circles/how-to-order/) - [Free trial](https://carrotsearch.com/circles/free-trial/) # How to order Circles Let us know by e-mail how many Circles licenses you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The number of Circles licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. 3. ## Happy visualizing! If you have any questions or problems with Circles, please do get in touch. To receive new release notifications, sign up to Circles announcements [mailing list](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Try Circles for free. Use branding-locked version for as long as you like. [Get a trial](https://carrotsearch.com/circles/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-visualization) No. Instead of refunds, we offer a free perpetual demo version that displays a Circles logo. You can use that version to try the visualization on your own data and decide if it works for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount-for-a-visualization) We offer a 50% discount when Circles is purchased together with a Lingo3G or Lingo4G license. The discount also applies if you already hold a valid Lingo3G or Lingo4G license and would like to purchase Circles. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- - [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) - [Live demos](https://get.carrotsearch.com/circles/latest/demos) - [How to order](https://carrotsearch.com/circles/how-to-order/) - [Free trial](https://carrotsearch.com/circles/free-trial/) # Carrot Search Circles License Agreement By downloading, installing, copying, saving on your computer, or otherwise using this software, you (Licensee, as defined below) are becoming a party to this Agreement and you are consenting to be bound by all the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, you should not download, install or use the software. If there is a separate agreement in force between Carrot Search and the Licensee, Licensee will not be bound by this Agreement. Upon your acceptance of this Agreement, Carrot Search grants to you a non-exclusive and non-transferable license to use Circles, provided that you agree to the following: 1. **Parties** 1. _Carrot Search_ means Carrot Search s.c., located at Boznicza 11/57, 61-751 Poznan, Poland. 2. _Licensee_ means the individual or legal entity specified in the License File defined below. 2. **Definitions** 1. _Circles_ means a software system for visualizing hierarchical data structures. Circles is distributed in a binary form along with documentation. 2. _Integration Code_ means the source code provided by Carrot Search to Licensee to facilitate integration of Circles with the software developed by Licensee. 3. _License File_ means electronic evidence and specification of the license granted to the Licensee by Carrot Search. Only Carrot Search is permitted to produce License Files for Circles. 4. _Licensing Period_ means the perpetual or limited period in which Licensee can use Circles. Licensing Period is specified in the License File. 5. _Maintenance Period_ means the limited period in which Licensee is entitled to upgrade to new versions of Circles and receive support. Maintenance Period is specified in the License File. 6. _Server_ means a computer controlled by Licensee which serves Circles for the purposes of delivering services to end users. Identification of the Server in the License File may vary based on the characteristics of Licensee's software that uses Circles. 3. **Ownership** 1. Circles is the property of Carrot Search. Circles is licensed, not sold. Title and copyrights to Circles, in whole or in part, and all copies thereof, and all modifications, enhancements, derivatives and other alterations of Circles, regardless of who made them, if any, are, and will remain, the sole and exclusive property of Carrot Search. 2. The structure, organization, and code embodied in Circles, except for Integration Code, are valuable and confidential trade secrets of Carrot Search and are protected by copyright laws, intellectual property laws and treaties. Licensee agrees to abide by the copyright law and all other applicable laws. 4. **Grant of license** Subject to the terms, conditions, and limitations set forth in this Agreement, Carrot Search hereby grants to Licensee a worldwide, limited, non-exclusive, non-transferable license to use Circles as follows: 1. Licensee may: 1. serve Circles from the Server or Servers identified in the License File for the purposes of delivering services to end users during the Licensing Period; 2. use Circles on computers controlled by Licensee for the purposes of development of Licensee's software dependent on Circles during the Licensing Period; 3. upgrade to any version of Circles released during the Maintenance Period; 4. include Integration Code, in entirety or in parts, in the software developed by Licensee; 5. make back-up copies of Circles and License File solely for archival purposes; 6. use the Limited Version of Circles, as described in Section 5, without purchasing a License File. 2. Licensee may not: 1. sell, redistribute, encumber, give, lend, rent, lease, sublicense, or otherwise transfer Circles, or any portions of Circles, to anyone without the prior written consent of Carrot Search; 2. reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code of Circles, or create derivative works from Circles; 3. allow the use of Circles on Servers not identified in the License File; 4. disable, remove or circumvent the feature limitation mechanisms built into the Limited Version of Circles. Any attempt to do so will be in violation of this Agreement and will terminate Licensee's rights to use Circles. 3. Carrot Search will: 1. promptly, and in any event within 72 hours, respond to e-mail requests for support that are made during mutually agreed upon business hours, taking into account time zone differences, except weekends and holidays; 2. notify Licensee of and provide any bug fix and new releases of Circles; 3. provide a number of free consulting hours, specified in the License File, for integration code adjustments, performance tuning and extra documentation. Any additional technical support shall be charged at standard Carrot Search hourly rate. 5. **Use of the Limited Version** 1. Subject to the terms of this Agreement, Licensee is granted a right to use the Limited Version of Circles without charge; 6. **Disclaimer of warranty** Circles is provided on an "as is" without warranties of any kind, express, implied or statutory, including but not limited to, the implied warranties of title, noninfringement, merchantability and fitness for a particular purpose. 7. **Disclaimer of damages** 1. Regardless of whether any remedy set forth herein fails of its essential purpose, in no event will Carrot Search be liable to Licensee under any theory for any damages suffered by Licensee or any user of Circles, or for any special, incidental, indirect, consequential, or similar damages (including without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use or inability to use Circles, or the provision of or failure to provide support services, even if Carrot Search has been advised of the possibility of such damages, and regardless of the legal or equitable theory (contract, tort or otherwise) upon which the claim is based; 2. In any case, Carrot Search's entire liability under any provision of this agreement will be limited to the amount actually paid by licensee for Circles. 8. **Term and Termination** This Agreement takes effect upon Licensee's acceptance of the terms of this Agreement and remains effective until terminated by either party in accordance with this Agreement. Licensee may terminate this Agreement at any time by destroying all copies of Circles. This Agreement will automatically terminate if Licensee fails to comply with any term or condition of this Agreement. Upon termination of this Agreement, Licensee warrants that they will immediately destroy all copies of Circles. 9. **General** 1. Unless the Licensee explicitly opts out by notifying the Carrot Search, the Licensee agrees to be identified as a customer of Carrot Search and that Carrot Search may refer to Licensee by name, trade name and trademark on Carrot Search web site and marketing materials; 2. Carrot Search reserves the right at any time to cease the support of Circles and to alter prices, features, specifications, capabilities, functions, licensing terms, release dates, general availability or other characteristics of Circles; 3. This Agreement, including Third Party Software license agreements, constitutes the entire agreement between the parties concerning Licensee' use of the Software, and supersedes any and all prior or contemporaneous oral or written representations, communications, or advertising with respect to the Software. No purchase order, other ordering document or any hand written or typewritten text which purports to modify or supplement the printed text of this Agreement or any schedule will add to or vary the terms of this Agreement unless signed by both Licensee and Carrot Search. 4. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach. The provisions of this Agreement which require or contemplate performance after the expiration or termination of this Agreement will be enforceable notwithstanding said expiration or termination. 5. This Agreement will be construed under the laws of the Polish trade and European Union, without regard to conflicts of laws provisions thereof. This Agreement and the performance of all obligations hereunder shall be governed according to Polish Law and the parties hereto hereby submit to the jurisdiction of the Polish Courts. All civil suits between the parties hereto shall be adjudicated by a common court with official residence in Poznan, Poland. 6. Titles are inserted for convenience only and will not affect in any way the meaning or interpretation of this Agreement. If any provision of this Agreement is held invalid, the remainder of this Agreement will continue in full force and effect. Either Licensor or Licensee may assign this Agreement in the case of a merger or sale of substantially all of its respective assets to another entity. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and assigns. --- # Interactive visualization of 2D point collections [Free trial](https://carrotsearch.com/dotatlas/free-trial/) [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) ![dotAtlas: a JavaScript library for interactive exploration of 2D point collections. Zoomable visualizations with elevations, markers, and labels.](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/showcase.png) dotAtlas is a great tool to visualize and explore collections of 2D points. This screenshot shows a zoomed-in [dotAtlas visualization of over one million arXiv paper abstracts](https://get.carrotsearch.com/dotatlas/latest/demos/visualizing-1m-points.html). The marker layer draws points representing individual papers, where the color corresponds to the cluster the paper belongs to. The label layer shows phrases describing various areas of the map. Finally, the elevation layer adds depth to the visualization by highlighing the densely populated areas. dotAtlas visualizations are fully-interactive, including 60 FPS zooming and panning, allowing users to explore the data in detail. - [![dotAtlas logo](https://carrotsearch.com/assets/carrotsearch/logos/dotatlas-horizontal.svg)](https://carrotsearch.com/dotatlas/) - [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) - [How to order](https://carrotsearch.com/dotatlas/how-to-order/) - [Free trial](https://carrotsearch.com/dotatlas/free-trial/) ## Map-like visualization of 2D point collections dotAtlas combines various types of layers, such as elevations, markers, or labels, for space-efficient interactive exploration of large 2D point collections. ![](https://carrotsearch.com/assets/flaticon/binary-code.svg) ### For any data type Visualize 2D points representing documents, words, or any other data. ![](https://carrotsearch.com/assets/flaticon/map-location.svg) ### For any embedding Visualize 2D embeddings from UMAP, t-SNE, Lingo4G or any other algorithm. ![](https://carrotsearch.com/assets/flaticon/clusters.svg) ### For data clusters Use colors to add cluster membership information to the visualization. ![](https://carrotsearch.com/assets/flaticon/idea.svg) ### For production and research Ready for production applications, great for research experiments. ![](https://carrotsearch.com/assets/flaticon/tree-of-rectangles-foliage.svg) ### Blazing fast WebGL-based 60 FPS animations, even with millions of data points. ![](https://carrotsearch.com/assets/flaticon/css-code.svg) ### JavaScript API Integrate dotAtlas within minutes using a simple JavaScript API. ## Stack layers of different types into a stunning visualization More complex visualizations and interactions require a little customization code. We can help with that. ![Marker layers](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/markers-layer.png) ### Marker layers Display individual points as markers with custom per-marker colors, shapes, sizes, and opacities. The marker layer displays points as markers on your map. You can customize marker properties like color, shape, size, and opacity to represent different attributes of your data. [Markers layer demo](https://get.carrotsearch.com/dotatlas/latest/demos/marker-properties.html) ![Label layer](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/labels-layer.png) ### Label layer Annotate groups of points with text labels with control over color, opacity, and display priorities. The label layer adds textual annotation to your map. You can control label properties like color and opacity, and set display priorities so that the most important labels show at lower zoom levels. [Labels layer demo](https://get.carrotsearch.com/dotatlas/latest/demos/label-properties.html) ![Elevation layer](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/elevation-layer.png) ### Elevation layer Add depth to your data with an elevation layer for a topographic map-like experience. The elevation layer creates a topographic map-like visualization that can add depth to your data. Points with higher elevation values appear as peaks, while points with lower values form valleys. This creates a visually appealing and intuitive way to represent the importance or density of points in your dataset. [Elevation layer demo](https://get.carrotsearch.com/dotatlas/latest/demos/layer-properties.html) ![Outline layer](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/outline-layer.png) ### Outline layer Highlight important areas of your 2D embedding with one or more outline layers. Stack one or more outline layers on top of your visualization to highlight specific groups of points, for example the points the user selected for further inspection. [Point selection demo](https://get.carrotsearch.com/dotatlas/latest/demos/hover-and-selection.html) ![Plugins add high-level features](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/plugins.png) ### Plugins add high-level features Dark mode, hover and selection tracking, nearby point clustering, elevation value legend and more. Plugins use the core dotAtlas API to implement higher-level features, such as dark mode or hover and selection tracking. The source code of all plugins is available for inspection and modification. [Map legend plugin demo](https://get.carrotsearch.com/dotatlas/latest/demos/map-legend.html) [Selection plugin demo](https://get.carrotsearch.com/dotatlas/latest/demos/hover-and-selection.html) ![Lingo4G integration](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/lingo4g-integration.png) ### Lingo4G integration Visualize Lingo4G document embeddings and clusters as an interactive map using a dedicated plugin. dotAtlas integrates with Lingo4G to visualize document embeddings and clusters as an interactive map. Each marker represents a document, and similar documents appear close together on the map. [Lingo4G plugin demo](https://get.carrotsearch.com/dotatlas/latest/demos/lingo4g-doc-map.html) ![Smooth even with 1M+ points](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/large-data.png) ### Smooth even with 1M+ points Visualize millions of points at once, enjoy responsiveness and smooth interactions. You can visualize collections of millions of points at once and still enjoy responsiveness and smooth interactions. You can display new data incrementally as they become available. [Visualizing 1M+ points demo](https://get.carrotsearch.com/dotatlas/latest/demos/visualizing-1m-points.html) ![Attention to detail](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/attention-to-detail.png) ### Attention to detail Realistic map-like rendering with light shading and broken contours for better visibility of labels. ![Fluid 60 FPS interactions](https://carrotsearch.com/assets/html5/webgl.svg) ### Fluid 60 FPS interactions Implemented in WebGL for blazing fast interactions, also with large data sets. ![PNG and JPEG export](https://carrotsearch.com/assets/flaticon/jpg-png.svg) ### PNG and JPEG export Export visualizations to PNG or JPEG images for offline use. ![](https://carrotsearch.com/assets/flaticon/computer.svg)[ ### See live demos ](https://get.carrotsearch.com/dotatlas/latest/demos) ## Questions & Answers ### What are the requirements of dotAtlas? dotAtlas requires JavaScript, HTML5 canvas, and WebGL support. It works on any major desktop browser, including Chrome, Edge, Firefox, and Safari. ### Are mobile devices supported? dotAtlas does not currently support mobile devices. Based on user interest, dotAtlas may support mobile browsers in the future, possibly with a limited set of available layer types or slightly degraded rendering quality. ### Does dotAtlas require Lingo3G or Lingo4G to run? No, dotAtlas can be used independently of Lingo3G or Lingo4G. Of course, it will also be an excellent tool to visualize document embeddings and clusters you get from our clustering engines, especially [Lingo4G](https://carrotsearch.com/lingo4g/). ### How is dotAtlas licensed? The most common dotAtlas licensing scenarios are for use in SaaS applications and Intranet deployments. We require one dotAtlas license per one SaaS application, regardless of the number of servers handling the application and the number of users. Similarly, we require one dotAtlas license per deployment in one Intranet, regardless of the number of servers and users. Each license comes with 12 months of software maintenance, covering support and all upgrades. For non-typical deployment scenarios, such as OEM distribution, please [get in touch](https://carrotsearch.com/contact/). ### What is the cost of a dotAtlas license? Please [contact us](https://carrotsearch.com/contact/) for a quote. ### Is there a free version? Yes, you can use the [demo version](https://carrotsearch.com/dotatlas/free-trial/), which displays the dotAtlas logo, free of charge. The demo version is otherwise fully-functional. ## Next steps - ### Browse dotAtlas documentation - [API overview](https://get.carrotsearch.com/dotatlas/latest/doc/api-overview/) - [Quick start](https://get.carrotsearch.com/dotatlas/latest/doc/quick-start/) - [Using plugins](https://get.carrotsearch.com/dotatlas/latest/doc/using-plugins/) - ### Try and order - [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) - [Free trial](https://carrotsearch.com/dotatlas/free-trial/) - [How to order](https://carrotsearch.com/dotatlas/how-to-order/) --- - [![dotAtlas logo](https://carrotsearch.com/assets/carrotsearch/logos/dotatlas-horizontal.svg)](https://carrotsearch.com/dotatlas/) - [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) - [How to order](https://carrotsearch.com/dotatlas/how-to-order/) - [Free trial](https://carrotsearch.com/dotatlas/free-trial/) # dotAtlas free trial Trial version displays a small dotAtlas logo in the visualization area. Otherwise, it's fully functional. (If you don't mind the logo, feel free to use the trial version for as long as you like. Also for commercial projects.) [Download trial](https://get.carrotsearch.com/dotatlas/demo/package) ![](https://carrotsearch.com/assets/flaticon/arrows/turn-right-arrow-with-broken-line.svg) ![dotAtlas with branding logo](https://carrotsearch.com/assets/carrotsearch/features/dotatlas/attribution.png) 1. ## Download The latest trial package is available at: [https://get.carrotsearch.com/​dotatlas​/demo/package](https://get.carrotsearch.com/dotatlas/demo/package) When the download completes, follow the instructions presented on the download page. **Existing customers**: The package available from this page contains dotAtlas with locked branding options. If you hold a dotAtlas license, download the latest unlimited version from: [https://secure.carrotsearch.com](https://secure.carrotsearch.com) 2. ## `npm`, `pnpm` or `yarn`? Add dotAtlas dependency to your project: `[@carrotsearch/dotatlas](https://www.npmjs.com/package/@carrotsearch/dotatlas)` See the following resources to get started with the API: - [dotAtlas API quick start](https://get.carrotsearch.com/dotatlas/latest/doc/quick-start/) - [dotAtlas API overview](https://get.carrotsearch.com/dotatlas/latest/doc/api-overview/) - [CodeSandbox plain JS example](https://codesandbox.io/p/sandbox/beautiful-water-m82pmk/) - [CodeSandbox React example](https://codesandbox.io/p/sandbox/dotatlas-quick-start-rect-387f84/) 3. ## Questions? If you have any questions or problems with dotAtlas, please do get in touch. Some pointers you might find useful: - [Code examples](https://get.carrotsearch.com/dotatlas/latest/demo/): complete pieces of code showing how to use specific features. - [dotAtlas API overview](https://get.carrotsearch.com/dotatlas/latest/doc/api-overview/) - [Quick start](https://get.carrotsearch.com/dotatlas/latest/doc/quick-start/) - [Using plugins](https://get.carrotsearch.com/dotatlas/latest/doc/using-plugins/) ## Ready to purchase dotAtlas? Let us know by e-mail how many licenses you'd like. [How to order](https://carrotsearch.com/dotatlas/how-to-order/) ## Questions & Answers ### Do I need a trial license to evaluate dotAtlas?[](#do-i-need-a-trial-license) No. The trial version is perpetual and does not require a license file to run. Instead, it displays a small dotAtlas logo in the visualization area. ### Can I use the demo version in a commercial project?[](#can-i-use-the-demo-version-in-a-commercial-project) Yes, feel free to use the demo version in your project free of charge. The only requirement is that you must not remove or obscure the dotAtlas logo the demo version displays. ### Can I put my own logo on the visualization?[](#can-i-put-my-own-logo-on-the-visualization) The licensed version allows changing or completely removing the logo. The demo version always displays dotAtlas logo and does not allow to remove it. --- - [![dotAtlas logo](https://carrotsearch.com/assets/carrotsearch/logos/dotatlas-horizontal.svg)](https://carrotsearch.com/dotatlas/) - [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) - [How to order](https://carrotsearch.com/dotatlas/how-to-order/) - [Free trial](https://carrotsearch.com/dotatlas/free-trial/) # How to order dotAtlas Let us know by e-mail how many dotAtlas licenses you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The number of dotAtlas licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. 3. ## Happy visualizing! If you have any questions or problems with dotAtlas, please do get in touch. To receive new release notifications, sign up to dotAtlas announcements [mailing list](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Try dotAtlas for free. Use branding-locked version for as long as you like. [Get a trial](https://carrotsearch.com/dotatlas/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-visualization) No. Instead of refunds, we offer a free perpetual demo version that displays a dotAtlas logo. You can use that version to try the visualization on your own data and decide if it works for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount-for-a-visualization) We offer a 50% discount when dotAtlas is purchased together with a Lingo3G or Lingo4G license. The discount also applies if you already hold a valid Lingo3G or Lingo4G license and would like to purchase dotAtlas. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- - [![dotAtlas logo](https://carrotsearch.com/assets/carrotsearch/logos/dotatlas-horizontal.svg)](https://carrotsearch.com/dotatlas/) - [Live demos](https://get.carrotsearch.com/dotatlas/latest/demos) - [How to order](https://carrotsearch.com/dotatlas/how-to-order/) - [Free trial](https://carrotsearch.com/dotatlas/free-trial/) # Carrot Search dotAtlas License Agreement By downloading, installing, copying, saving on your computer, or otherwise using this software, you (Licensee, as defined below) are becoming a party to this Agreement and you are consenting to be bound by all the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, you should not download, install or use the software. If there is a separate agreement in force between Carrot Search and the Licensee, Licensee will not be bound by this Agreement. Upon your acceptance of this Agreement, Carrot Search grants to you a non-exclusive and non-transferable license to use dotAtlas, provided that you agree to the following: 1. **Parties** 1. _Carrot Search_ means Carrot Search s.c., located at Boznicza 11/57, 61-751 Poznan, Poland. 2. _Licensee_ means the individual or legal entity specified in the License File defined below. 2. **Definitions** 1. _dotAtlas_ means a software system for visualizing 2d point collections. dotAtlas is distributed in a binary form along with documentation. 2. _Integration Code_ means the source code provided by Carrot Search to Licensee to facilitate integration of dotAtlas with the software developed by Licensee. 3. _License File_ means electronic evidence and specification of the license granted to the Licensee by Carrot Search. Only Carrot Search is permitted to produce License Files for dotAtlas. 4. _Licensing Period_ means the perpetual or limited period in which Licensee can use dotAtlas. Licensing Period is specified in the License File. 5. _Maintenance Period_ means the limited period in which Licensee is entitled to upgrade to new versions of dotAtlas and receive support. Maintenance Period is specified in the License File. 6. _Server_ means a computer controlled by Licensee which serves dotAtlas for the purposes of delivering services to end users. Identification of the Server in the License File may vary based on the characteristics of Licensee's software that uses dotAtlas. 3. **Ownership** 1. dotAtlas is the property of Carrot Search. dotAtlas is licensed, not sold. Title and copyrights to dotAtlas, in whole or in part, and all copies thereof, and all modifications, enhancements, derivatives and other alterations of dotAtlas, regardless of who made them, if any, are, and will remain, the sole and exclusive property of Carrot Search. 2. The structure, organization, and code embodied in dotAtlas, except for Integration Code, are valuable and confidential trade secrets of Carrot Search and are protected by copyright laws, intellectual property laws and treaties. Licensee agrees to abide by the copyright law and all other applicable laws. 4. **Grant of license** Subject to the terms, conditions, and limitations set forth in this Agreement, Carrot Search hereby grants to Licensee a worldwide, limited, non-exclusive, non-transferable license to use dotAtlas as follows: 1. Licensee may: 1. serve dotAtlas from the Server or Servers identified in the License File for the purposes of delivering services to end users during the Licensing Period; 2. use dotAtlas on computers controlled by Licensee for the purposes of development of Licensee's software dependent on dotAtlas during the Licensing Period; 3. upgrade to any version of dotAtlas released during the Maintenance Period; 4. include Integration Code, in entirety or in parts, in the software developed by Licensee; 5. make back-up copies of dotAtlas and License File solely for archival purposes; 6. use the Limited Version of dotAtlas, as described in Section 5, without purchasing a License File. 2. Licensee may not: 1. sell, redistribute, encumber, give, lend, rent, lease, sublicense, or otherwise transfer dotAtlas, or any portions of dotAtlas, to anyone without the prior written consent of Carrot Search; 2. reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code of dotAtlas, or create derivative works from dotAtlas; 3. allow the use of dotAtlas on Servers not identified in the License File; 4. disable, remove or circumvent the feature limitation mechanisms built into the Limited Version of dotAtlas. Any attempt to do so will be in violation of this Agreement and will terminate Licensee's rights to use dotAtlas. 3. Carrot Search will: 1. promptly, and in any event within 72 hours, respond to e-mail requests for support that are made during mutually agreed upon business hours, taking into account time zone differences, except weekends and holidays; 2. notify Licensee of and provide any bug fix and new releases of dotAtlas; 3. provide a number of free consulting hours, specified in the License File, for integration code adjustments, performance tuning and extra documentation. Any additional technical support shall be charged at standard Carrot Search hourly rate. 5. **Use of the Limited Version** 1. Subject to the terms of this Agreement, Licensee is granted a right to use the Limited Version of dotAtlas without charge; 6. **Disclaimer of warranty** dotAtlas is provided on an "as is" without warranties of any kind, express, implied or statutory, including but not limited to, the implied warranties of title, noninfringement, merchantability and fitness for a particular purpose. 7. **Disclaimer of damages** 1. Regardless of whether any remedy set forth herein fails of its essential purpose, in no event will Carrot Search be liable to Licensee under any theory for any damages suffered by Licensee or any user of dotAtlas, or for any special, incidental, indirect, consequential, or similar damages (including without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use or inability to use dotAtlas, or the provision of or failure to provide support services, even if Carrot Search has been advised of the possibility of such damages, and regardless of the legal or equitable theory (contract, tort or otherwise) upon which the claim is based; 2. In any case, Carrot Search's entire liability under any provision of this agreement will be limited to the amount actually paid by licensee for dotAtlas. 8. **Term and Termination** This Agreement takes effect upon Licensee's acceptance of the terms of this Agreement and remains effective until terminated by either party in accordance with this Agreement. Licensee may terminate this Agreement at any time by destroying all copies of dotAtlas. This Agreement will automatically terminate if Licensee fails to comply with any term or condition of this Agreement. Upon termination of this Agreement, Licensee warrants that they will immediately destroy all copies of dotAtlas. 9. **General** 1. Unless the Licensee explicitly opts out by notifying the Carrot Search, the Licensee agrees to be identified as a customer of Carrot Search and that Carrot Search may refer to Licensee by name, trade name and trademark on Carrot Search web site and marketing materials; 2. Carrot Search reserves the right at any time to cease the support of dotAtlas and to alter prices, features, specifications, capabilities, functions, licensing terms, release dates, general availability or other characteristics of dotAtlas; 3. This Agreement, including Third Party Software license agreements, constitutes the entire agreement between the parties concerning Licensee' use of the Software, and supersedes any and all prior or contemporaneous oral or written representations, communications, or advertising with respect to the Software. No purchase order, other ordering document or any hand written or typewritten text which purports to modify or supplement the printed text of this Agreement or any schedule will add to or vary the terms of this Agreement unless signed by both Licensee and Carrot Search. 4. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach. The provisions of this Agreement which require or contemplate performance after the expiration or termination of this Agreement will be enforceable notwithstanding said expiration or termination. 5. This Agreement will be construed under the laws of the Polish trade and European Union, without regard to conflicts of laws provisions thereof. This Agreement and the performance of all obligations hereunder shall be governed according to Polish Law and the parties hereto hereby submit to the jurisdiction of the Polish Courts. All civil suits between the parties hereto shall be adjudicated by a common court with official residence in Poznan, Poland. 6. Titles are inserted for convenience only and will not affect in any way the meaning or interpretation of this Agreement. If any provision of this Agreement is held invalid, the remainder of this Agreement will continue in full force and effect. Either Licensor or Licensee may assign this Agreement in the case of a merger or sale of substantially all of its respective assets to another entity. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and assigns. --- # Addictively interactive Voronoi treemap [Free trial](https://carrotsearch.com/foamtree/free-trial/) [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) ![FoamTree: a JavaScript Voronoi treemap visualization with innovative layouts, animated interactions, endless customization.](https://carrotsearch.com/assets/carrotsearch/screenshots/foamtree-ft500-polygonal.jpg) FoamTree is a great tool to visualize all kinds of hierarchical data. This screen shot shows a demo application that [visualizes companies from the Financial Times FT 500 list](https://get.carrotsearch.com/foamtree/latest/demos/ft500.html). Companies are grouped into a 2-level hierarchy by sector, size of the cells corresponds to the market value of the company, color depicts the p/e ratio. - [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) - [How to order](https://carrotsearch.com/foamtree/how-to-order/) - [Free trial](https://carrotsearch.com/foamtree/free-trial/) ## Efficient browsing of hierarchical data. And fun too. FoamTree is a JavaScript Voronoi treemap visualization. Innovative layouts, animated interactions, endless customization. ![FoamTree is a JavaScript HTML5 component, it will work in any modern browser, both on desktop and mobile.](https://carrotsearch.com/assets/carrotsearch/screenshots/foamtree-devices.jpg) ### Great on desktop and mobile FoamTree is a JavaScript HTML5 component. It will work in any modern browser, both on desktop and mobile platforms. ### Countless applications Our customers use FoamTree to present a broad range of data: word clouds, news highlights, financial results, photos, site maps and more. ## Great experience out of the box For stunning results, level up and write a little customization code. We can help with that. ![Non-rectangular layouts](https://carrotsearch.com/assets/carrotsearch/features/foamtree/non-rectangular-layout.jpg) ### Non-rectangular layouts Visually pleasing non-rectangular layouts efficiently use the available space. FoamTree's default layout is based on Voronoi power diagrams. It divides the available space into convex polygons, creating organic-looking arrangements. The screen shot shows FoamTree visualization of the 3-level cluster structure generated by Lingo3G for 500 web search results for query _data mining_. View the [settings panel demo](https://get.carrotsearch.com/foamtree/latest/demos/settings.html) for the interactive version. ![Rectangular treemaps](https://carrotsearch.com/assets/carrotsearch/features/foamtree/rectangular-layout.jpg) ### Rectangular treemaps Traditional squarified and ordered rectangular treemaps are also supported. FoamTree also supports the traditional rectangular treemaps. Currently available are the squarified and ordered layout variants. The screen shot shows [FT500 Global](http://www.ft.com/cms/s/2/a352a706-16a0-11e5-b07f-00144feabdc0.html) companies grouped by sector. Cell size indicates market value, color corresponds to total assets. The interactive version is available in the [FT500 demo](https://get.carrotsearch.com/foamtree/latest/demos/ft500.html). ![Zooming and exposing](https://carrotsearch.com/assets/carrotsearch/features/foamtree/zoom-and-expose.jpg) ### Zooming and exposing Animated zooming and expose interaction for browsing of deeply nested hierarchies. To better explore deep hierarchies, users can zoom into the areas of interest or 'expose' individual groups. The screen shot shows the _Data Mining Algorithms_ group exposed. To see zooming in action, double-click cells in the [Tree of Life demo](https://get.carrotsearch.com/foamtree/latest/demos/large.html). For the expose effect, double-click groups in the [Photo explorer demo](https://get.carrotsearch.com/foamtree/latest/demos/flickr.html). ![Endless customizations](https://carrotsearch.com/assets/carrotsearch/features/foamtree/customizations.jpg) ### Endless customizations Custom content in each cell, including additional text, shapes or images. By [writing some extra code](https://get.carrotsearch.com/foamtree/latest/api/#groupContentDecorator), you can draw arbitrary content in each FoamTree cell. The screen shot shows the [Photo explorer demo](https://get.carrotsearch.com/foamtree/latest/demos/flickr.html) which displays daily top Flickr photos in FoamTree. Notice that the exposed cell's content consists of the individual photo, its title, author and view count below. The blurred version of the photo serves as the cell's backdrop. Incidentally, the screen shot shows some spectacular photos of Poznan, Poland (where Carrot Search is based) by [Erik Witsoe](https://www.flickr.com/photos/ewitsoe/). ![Non-rectangular containers](https://carrotsearch.com/assets/carrotsearch/features/foamtree/non-rectangular-container.jpg) ### Non-rectangular containers Embedding Voronoi treemaps in any convex shape, such as a circle or diamond. FoamTree can put polygonal Voronoi diagrams into any convex container, such as a triangle, hexagon or a circle. Shown in the screen shot are FT500 companies grouped by sector and embedded in a circular container. View the [FT500 demo](https://get.carrotsearch.com/foamtree/latest/demos/ft500.html) for an interactive version. ![Support for very large hierarchies](https://carrotsearch.com/assets/carrotsearch/features/foamtree/large-hierarchy.jpg) ### Support for very large hierarchies Handling of hierarchies with 100k+ nodes on 100+ levels, such as the tree of life data. With lazy-loading and progressive disclosure, FoamTree makes it possible to browse deeply-nested hierarchies of 100k+ nodes and more. The screen shot shows a selected part of the Tree of Life hierarchy with more than 100k nodes and the maximum of 37 nesting levels. Go to the [Tree of Life demo](https://get.carrotsearch.com/foamtree/latest/demos/large.html) for an interactive version. ![Flattened and hierarchical stacking](https://carrotsearch.com/assets/carrotsearch/features/foamtree/stacking.jpg) ### Flattened and hierarchical stacking All levels visible at once or in a top-down progressive disclosure arrangement. FoamTree can display the polygonal and rectangular treemaps in two arrangements. On the left is the **flattened** arrangement where all levels of the hierarchy are visible at once. On the right is the **hierarchical** arrangement where only the top level of the hierarchy is visible and the user can click-and-hold specific groups to "open" them for further inspection. The screen shot shows unit test coverage of the open source Carrot2 document clustering engine generated by Atlassian Clover. See the [coverage demo](https://get.carrotsearch.com/foamtree/latest/demos/coverage.html) for an interactive version. ![Multilingual and emoji-friendly](https://carrotsearch.com/assets/carrotsearch/features/foamtree/multilingual.jpg) ### Multilingual and emoji-friendly Supports all special characters your browser can display, including emoji. FoamTree can display all the characters your browser can render, including Arabic, Chinese, Japanese, Korean as well as emoji. View the [settings demo](https://get.carrotsearch.com/foamtree/latest/demos/settings.html) and choose the multilingual data set there for an interactive version. ![Animated transitions](https://carrotsearch.com/assets/carrotsearch/features/foamtree/animations.jpg) ### Animated transitions Multitude of animation parameters can create tens of rollout and pullback effects. FoamTree uses animated transitions for zooming, exposing as well as revealing and replacing visualized data. Using a wide array of parameters, you can create your own data rollout and pullback effects. The screen shots shows the [settings panel demo](https://get.carrotsearch.com/foamtree/latest/demos/settings.html) and a frozen frame of one data rollout animation. ![Extensive tuning](https://carrotsearch.com/assets/carrotsearch/features/foamtree/tuning-panel.jpg) ### Extensive tuning Settings panel for tuning of visual properties and exporting them to your Java code. You can tune various aspects of the look and behavior of FoamTree, including cell layout, colors and borders, label fonts and sizes, animation speeds and easing functions. The screen shot shows the [settings panel demo](https://get.carrotsearch.com/foamtree/latest/demos/settings.html) with settings altered to get near-round shapes of FoamTree cells. ![JavaScript and JSON API](https://carrotsearch.com/assets/carrotsearch/features/foamtree/api.png) ### JavaScript and JSON API Get started within minutes. FoamTree is a small JavaScript library, 43kB gzipped. To get your first visualization, pass a HTML element and some data to FoamTree constructor. See [FoamTree API reference](https://get.carrotsearch.com/foamtree/latest/api) for detailed documentation of all available options. ![](https://carrotsearch.com/assets/flaticon/computer.svg)[ ### See live demos ](https://get.carrotsearch.com/foamtree/latest/demos) ## Questions & Answers ### What are the requirements of FoamTree?[](#what-are-the-requirements) FoamTree requires JavaScript and HTML5 canvas support. It will work on any major browser, including Chrome, Firefox, IE10+, Edge and Safari. ### Will FoamTree run on mobile devices?[](#are-mobile-devices-supported) Yes, FoamTree will run on Android and iOS phones and tablets. Touch-enabled laptops are also supported. ### Does FoamTree require Lingo3G or Lingo4G to run?[](#is-lingo3g-or-lingo4g-required) No, FoamTree can be used independently of Lingo3G or Lingo4G. Of course, it will also be an excellent tool to visualize clusters you get from our clustering engines. ### What hierarchy depth does FoamTree support?[](#what-hierarchy-depth-does-foamtree-support) FoamTree supports hierarchies of any depth. To aid visualization of very large data sets, such as the Tree of Life data with 100k+ nodes on 100+ levels, FoamTree offers lazy-loading of data and progressive disclosure of groups. ### How is FoamTree licensed?[](#what-is-the-licensing-model) The most common FoamTree licensing scenarios are for use in SaaS applications and Intranet deployments. We require one FoamTree license per one SaaS application, regardless of the number of servers handling the application and the number of users. Similarly, we require one FoamTree license per deployment in one Intranet, regardless of the number of servers and users. Each license comes with 12 months of software maintenance, covering support and all upgrades. For non-typical deployment scenarios, such as OEM distribution, please get in touch. ### What is the cost of a FoamTree license?[](#what-is-the-license-cost) Please [contact us](https://carrotsearch.com/contact/) for a quote. ### Can I get a discount?[](#can-i-get-a-discount) Yes, we offer a 50% discount for holders of valid Lingo3G or Lingo4G licenses. ### Is there a free version?[](#is-there-a-free-version) Yes, you can use the demo version, which displays FoamTree logo in one of the cells, free of charge. The demo version is otherwise fully-functional. ## Next steps - ### Browse FoamTree documentation - [Quick start](https://get.carrotsearch.com/foamtree/latest/api/#quick-start) - [Requirements](https://get.carrotsearch.com/foamtree/latest/api/#requirements) - [API overview](https://get.carrotsearch.com/foamtree/latest/api/#api-overview) - [Tuning options](https://get.carrotsearch.com/foamtree/latest/api/#options) - ### Try and order - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) - [Free trial](https://carrotsearch.com/foamtree/free-trial/) - [How to order](https://carrotsearch.com/foamtree/how-to-order/) --- - [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) - [How to order](https://carrotsearch.com/foamtree/how-to-order/) - [Free trial](https://carrotsearch.com/foamtree/free-trial/) # FoamTree free trial Trial version displays a small FoamTree logo in the visualization area. Otherwise, it's fully functional. (If you don't mind the logo, feel free to use the trial version for as long as you like. Also for commercial projects.) [Download trial](https://get.carrotsearch.com/foamtree/demo/package) ![](https://carrotsearch.com/assets/flaticon/arrows/turn-right-arrow-with-broken-line.svg) ![FoamTree with branding logo](https://carrotsearch.com/assets/carrotsearch/features/foamtree/attribution.jpg) 1. ## Download The latest trial package is available at: [https://get.carrotsearch.com/​foamtree​/demo/package](https://get.carrotsearch.com/foamtree/demo/package) When the download completes, follow the instructions presented on the download page. **Existing customers**: The package available from this page contains FoamTree with locked branding options. If you hold a FoamTree license, download the latest unlimited version from: [https://secure.carrotsearch.com](https://secure.carrotsearch.com) 2. ## `npm`, `pnpm` or `yarn`? Add FoamTree dependency to your project: `[@carrotsearch/foamtree](https://www.npmjs.com/package/@carrotsearch/foamtree)` See the following resources to get started with the API: - [FoamTree API quick start](https://get.carrotsearch.com/foamtree/latest/api/#quick-start) 3. ## Questions? If you have any questions or problems with FoamTree, please do get in touch. Some pointers you might find useful: - [Code examples](https://get.carrotsearch.com/foamtree/latest/demos): complete pieces of code showing how to use specific features. - [Quick start](https://get.carrotsearch.com/foamtree/latest/api/#quick-start) - [Basic usage](https://get.carrotsearch.com/foamtree/latest/api/#basic-usage) - [Advanced usage](https://get.carrotsearch.com/foamtree/latest/api/#advanced-use) - [Events](https://get.carrotsearch.com/circles/latest/api/#events) - [Options reference](https://get.carrotsearch.com/foamtree/latest/api/#options) ## Ready to purchase FoamTree? Let us know by e-mail how many licenses you'd like. [How to order](https://carrotsearch.com/foamtree/how-to-order/) ## Questions & Answers ### Do I need a trial license to evaluate FoamTree?[](#do-i-need-a-trial-license) No. The trial version is perpetual and does not require a license file to run. Instead, it displays a small FoamTree logo in the visualization area. ### Can I use the demo version in a commercial project?[](#can-i-use-the-demo-version-in-a-commercial-project) Yes, feel free to use the demo version in your project free of charge. The only requirement is that you must not remove or obscure the FoamTree logo the demo version displays. ### Can I put my own logo on the visualization?[](#can-i-put-my-own-logo-on-the-visualization) The licensed version allows changing or completely removing the logo. The demo version always displays FoamTree logo and does not allow to remove it. --- - [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) - [How to order](https://carrotsearch.com/foamtree/how-to-order/) - [Free trial](https://carrotsearch.com/foamtree/free-trial/) # How to order FoamTree Let us know by e-mail how many FoamTree licenses you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The number of FoamTree licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. 3. ## Happy treemapping! If you have any questions or problems with FoamTree, please do get in touch. To receive new release notifications, sign up to FoamTree announcements [mailing list](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Try FoamTree for free. Use branding-locked version for as long as you like. [Get a trial](https://carrotsearch.com/foamtree/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-visualization) No. Instead of refunds, we offer a free perpetual demo version that displays a FoamTree logo. You can use that version to try the visualization on your own data and decide if it works for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount-for-a-visualization) We offer a 50% discount when FoamTree is purchased together with a Lingo3G or Lingo4G license. The discount also applies if you already hold a valid Lingo3G or Lingo4G license and would like to purchase FoamTree. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- - [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) - [How to order](https://carrotsearch.com/foamtree/how-to-order/) - [Free trial](https://carrotsearch.com/foamtree/free-trial/) # Carrot Search FoamTree License Agreement By downloading, installing, copying, saving on your computer, or otherwise using this software, you (Licensee, as defined below) are becoming a party to this Agreement and you are consenting to be bound by all the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, you should not download, install or use the software. If there is a separate agreement in force between Carrot Search and the Licensee, Licensee will not be bound by this Agreement. Upon your acceptance of this Agreement, Carrot Search grants to you a non-exclusive and non-transferable license to use FoamTree, provided that you agree to the following: 1. **Parties** 1. _Carrot Search_ means Carrot Search s.c., located at Boznicza 11/57, 61-751 Poznan, Poland. 2. _Licensee_ means the individual or legal entity specified in the License File defined below. 2. **Definitions** 1. _FoamTree_ means a software system for visualizing hierarchical data structures. FoamTree is distributed in a binary form along with documentation. 2. _Integration Code_ means the source code provided by Carrot Search to Licensee to facilitate integration of FoamTree with the software developed by Licensee. 3. _License File_ means electronic evidence and specification of the license granted to the Licensee by Carrot Search. Only Carrot Search is permitted to produce License Files for FoamTree. 4. _Licensing Period_ means the perpetual or limited period in which Licensee can use FoamTree. Licensing Period is specified in the License File. 5. _Maintenance Period_ means the limited period in which Licensee is entitled to upgrade to new versions of FoamTree and receive support. Maintenance Period is specified in the License File. 6. _Server_ means a computer controlled by Licensee which serves FoamTree for the purposes of delivering services to end users. Identification of the Server in the License File may vary based on the characteristics of Licensee's software that uses FoamTree. 3. **Ownership** 1. FoamTree is the property of Carrot Search. FoamTree is licensed, not sold. Title and copyrights to FoamTree, in whole or in part, and all copies thereof, and all modifications, enhancements, derivatives and other alterations of FoamTree, regardless of who made them, if any, are, and will remain, the sole and exclusive property of Carrot Search. 2. The structure, organization, and code embodied in FoamTree, except for Integration Code, are valuable and confidential trade secrets of Carrot Search and are protected by copyright laws, intellectual property laws and treaties. Licensee agrees to abide by the copyright law and all other applicable laws. 4. **Grant of license** Subject to the terms, conditions, and limitations set forth in this Agreement, Carrot Search hereby grants to Licensee a worldwide, limited, non-exclusive, non-transferable license to use FoamTree as follows: 1. Licensee may: 1. serve FoamTree from the Server or Servers identified in the License File for the purposes of delivering services to end users during the Licensing Period; 2. use FoamTree on computers controlled by Licensee for the purposes of development of Licensee's software dependent on FoamTree during the Licensing Period; 3. upgrade to any version of FoamTree released during the Maintenance Period; 4. include Integration Code, in entirety or in parts, in the software developed by Licensee; 5. make back-up copies of FoamTree and License File solely for archival purposes; 6. use the Limited Version of FoamTree, as described in Section 5, without purchasing a License File. 2. Licensee may not: 1. sell, redistribute, encumber, give, lend, rent, lease, sublicense, or otherwise transfer FoamTree, or any portions of FoamTree, to anyone without the prior written consent of Carrot Search; 2. reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code of FoamTree, or create derivative works from FoamTree; 3. allow the use of FoamTree on Servers not identified in the License File; 4. disable, remove or circumvent the feature limitation mechanisms built into the Limited Version of FoamTree. Any attempt to do so will be in violation of this Agreement and will terminate Licensee's rights to use FoamTree. 3. Carrot Search will: 1. promptly, and in any event within 72 hours, respond to e-mail requests for support that are made during mutually agreed upon business hours, taking into account time zone differences, except weekends and holidays; 2. notify Licensee of and provide any bug fix and new releases of FoamTree; 3. provide a number of free consulting hours, specified in the License File, for integration code adjustments, performance tuning and extra documentation. Any additional technical support shall be charged at standard Carrot Search hourly rate. 5. **Use of the Limited Version** 1. Subject to the terms of this Agreement, Licensee is granted a right to use the Limited Version of FoamTree without charge; 6. **Disclaimer of warranty** FoamTree is provided on an "as is" without warranties of any kind, express, implied or statutory, including but not limited to, the implied warranties of title, noninfringement, merchantability and fitness for a particular purpose. 7. **Disclaimer of damages** 1. Regardless of whether any remedy set forth herein fails of its essential purpose, in no event will Carrot Search be liable to Licensee under any theory for any damages suffered by Licensee or any user of FoamTree, or for any special, incidental, indirect, consequential, or similar damages (including without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use or inability to use FoamTree, or the provision of or failure to provide support services, even if Carrot Search has been advised of the possibility of such damages, and regardless of the legal or equitable theory (contract, tort or otherwise) upon which the claim is based; 2. In any case, Carrot Search's entire liability under any provision of this agreement will be limited to the amount actually paid by licensee for FoamTree. 8. **Term and Termination** This Agreement takes effect upon Licensee's acceptance of the terms of this Agreement and remains effective until terminated by either party in accordance with this Agreement. Licensee may terminate this Agreement at any time by destroying all copies of FoamTree. This Agreement will automatically terminate if Licensee fails to comply with any term or condition of this Agreement. Upon termination of this Agreement, Licensee warrants that they will immediately destroy all copies of FoamTree. 9. **General** 1. Unless the Licensee explicitly opts out by notifying the Carrot Search, the Licensee agrees to be identified as a customer of Carrot Search and that Carrot Search may refer to Licensee by name, trade name and trademark on Carrot Search web site and marketing materials; 2. Carrot Search reserves the right at any time to cease the support of FoamTree and to alter prices, features, specifications, capabilities, functions, licensing terms, release dates, general availability or other characteristics of FoamTree; 3. This Agreement, including Third Party Software license agreements, constitutes the entire agreement between the parties concerning Licensee' use of the Software, and supersedes any and all prior or contemporaneous oral or written representations, communications, or advertising with respect to the Software. No purchase order, other ordering document or any hand written or typewritten text which purports to modify or supplement the printed text of this Agreement or any schedule will add to or vary the terms of this Agreement unless signed by both Licensee and Carrot Search. 4. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach. The provisions of this Agreement which require or contemplate performance after the expiration or termination of this Agreement will be enforceable notwithstanding said expiration or termination. 5. This Agreement will be construed under the laws of the Polish trade and European Union, without regard to conflicts of laws provisions thereof. This Agreement and the performance of all obligations hereunder shall be governed according to Polish Law and the parties hereto hereby submit to the jurisdiction of the Polish Courts. All civil suits between the parties hereto shall be adjudicated by a common court with official residence in Poznan, Poland. 6. Titles are inserted for convenience only and will not affect in any way the meaning or interpretation of this Agreement. If any provision of this Agreement is held invalid, the remainder of this Agreement will continue in full force and effect. Either Licensor or Licensee may assign this Agreement in the case of a merger or sale of substantially all of its respective assets to another entity. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and assigns. --- # Real-time clustering of thousands of docs and megabytes of text [Free trial](https://carrotsearch.com/lingo3g/free-trial/) [Live demo](http://search.carrotsearch.com) ![Lingo3G Clustering Workbench showing web search results clustering.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-workbench.jpg) **Lingo3G Workbench** is an app you can use to quickly try, tune and experiment with Lingo3G clustering. Out of the box, Workbench will let you apply Lingo3G clustering to web search results, PubMed, Elasticsearch and Solr search results, Excel, OpenOffice, CSV spreadsheets and JSON and XML files. Workbench can visualize the clusters using Carrot Search FoamTree and Circles visualizations. You can use Workbench to experiment with Lingo3G parameters and observe the impact on the results in real time. This screen shot shows search results for the query _vaccine_ clustered into a 2-level hierarchy. The clusters are visualized using Carrot Search FoamTree. - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) ## Instant analysis of small-to-medium quantities of text Lingo3G organizes collections of text documents into clearly-labeled hierarchical folders. In real-time, fully automatically, without external knowledge bases. ![](https://carrotsearch.com/assets/flaticon/idea.svg) ### Instant overview Get a concise summary of the subjects discussed in a set of documents. ![](https://carrotsearch.com/assets/flaticon/target.svg) ### More efficient browsing Navigate straight to the documents you need using clearly-labeled folders. ![](https://carrotsearch.com/assets/flaticon/loupe.svg) ### Query refinement Refine the initial query and "drill down" on a specific subject based on cluster labels. ![Java logo](https://carrotsearch.com/assets/oracle/java.svg) {REST} ![Apache Solr logo](https://carrotsearch.com/assets/solr/solr.svg) ![Elasticsearch logo](https://carrotsearch.com/assets/elastic/elasticsearch.svg) Painless integration into any environment using: Java API, REST API, Solr or Elasticsearch plugins. ## Accurate, blazing-fast, stateless ![](https://carrotsearch.com/assets/flaticon/tree-of-rectangles-foliage.svg) ### Useful hierarchical clusters Lingo3G aims to produce clusters with concise, varied, relevant and human-readable labels. ![](https://carrotsearch.com/assets/flaticon/magic-wand.svg) ### Autonomous No external taxonomies or knowledge bases needed, Lingo3G categorizes documents based only on their text. ![](https://carrotsearch.com/assets/flaticon/stopwatch-4.svg) ### High performance On a desktop machine, Lingo3G clusters 100 search results in about 5 ms. Clustering 10.000 abstracts takes ~1 s. ![](https://carrotsearch.com/assets/flaticon/big-dictionary.svg) ### Synonyms You can add synonym definitions, such as _photos = pictures = pics = photographs_, to increase the quality of clustering ![](https://carrotsearch.com/assets/flaticon/filtering-data.svg) ### Label filtering You can boost or suppress specific cluster labels to highlight product names or remove abusive language. ![](https://carrotsearch.com/assets/flaticon/web-development-1.svg) ### Tuning application Tuning of clustering characteristics and performance in a dedicated GUI application called Lingo3G Workbench. ![](https://carrotsearch.com/assets/flaticon/dialog.svg) ### 19 languages supported Including English, German, French, Chinese Simplified, Thai and Arabic. ![](https://carrotsearch.com/assets/flaticon/server.svg) ### 100% stateless Lingo3G is a stateless system: data-in, clusters-out. This makes horizontal scaling a breeze. ![](https://carrotsearch.com/assets/flaticon/coding-json.svg) ### REST/JSON API Stateless REST/JSON API for integration with any programming language. ![](https://carrotsearch.com/assets/flaticon/java.svg) ### Pure Java library Lingo3G works on any system supporting Java 11 or higher, no platform-specific dependencies. ![](https://carrotsearch.com/assets/carrotsearch/logos/carrot2.svg) ### Open source foundation Lingo3G is based on the Carrot2 framework. If you've used Carrot2, switching to Lingo3G will be a breeze. ## Dozens of happy customers around the globe ![AcclaimIP logo](https://carrotsearch.com/assets/carrotsearch/customers/acclaimip.png) AcclaimIP is the fastest, most intuitive patent analytics and landscape solution available. AcclaimIP uses Lingo3G to cluster patent documents. Not only are the clusters a great way to organize and visualize large sets of patents, but the theme extraction doubles as a keyword tool giving our customers yet another way to discover important search terms. **Matt Troyer**, President at [AcclaimIP](http://www.acclaimip.com), USA ![eTools logo](https://carrotsearch.com/assets/carrotsearch/customers/etools.png) eTools is the transparent Metasearch Engine built in Switzerland. We chose Lingo3G because it exceeded our expectations in several ways: easy to integrate, many configuration options and extremely fast and lightweight. Besides that, we are always pleased with the professional care and responsiveness of the Carrot Search team. **Stephan Schmid**, CEO at [Comcepta](http://www.comcepta.com/), Switzerland ![EPPI-Centre logo](https://carrotsearch.com/assets/carrotsearch/customers/eppi.png) EPPI-Centre uses Lingo3G in its systematic reviewing software, EPPI-Reviewer. A recent evaluation found overwhelming support for using Lingo3G, enabling users to make connections that they had not been able to predict in advance, “broadening understanding”, and so leading them to important new places. **Dr James Thomas**, Associate Director, [EPPI-Centre](http://eppi.ioe.ac.uk/cms/), Social Science Research Unit, Institute of Education, London ## Questions & Answers ### What are the applications of Lingo3G?[](#what-are-the-applications-of-lingo3g) Lingo3G is stateless and processes all data in-memory. This makes it particularly suitable for clustering data coming from highly-dynamic collections, such as search results or social conversations. Having said that, Lingo3G will be appropriate for processing any collection of texts where the total size does not exceed a few tens of megabytes. ### What is the largest collection Lingo3G can handle?[](#what-is-the-largest-collection-lingo3g-can-handle) Lingo3G was designed to perform real-time in-memory clustering of small and medium collections of documents, which roughly corresponds to about 5,000 documents, a few kilobytes each. The upper limit very much depends on the characteristics of your documents. Some of our customers report that they successfully use Lingo3G with as many as 100,000 documents. Please contact us for an evaluation license and performance tuning advice. For collections spanning millions of documents and gigabytes of text, consider [Lingo4G](https://carrotsearch.com/lingo4g/). ### Does Lingo3G come with end-user applications?[](#does-lingo3g-come-with-user-applications) Yes. Lingo3G comes with two browser-based apps for end users: [Search Results Clustering](https://search.carrotsearch.com) and [Clustering Workbench](https://search.carrotsearch.com/#/workbench). We created the apps to help you quickly try Lingo3G clustering on your data. However, if you find the apps useful in your daily text mining work, feel free to use them on a regular basis. While we plan to add new features to the end-user apps, our priority is the development of the Lingo3G clustering algorithm core. ### How is Lingo3G licensed?[](#how-is-lingo3g-licensed) We require one Lingo3G license per one physical or virtual server that runs Lingo3G binaries, regardless of the number of cores on the server, the number of users or requests handled by the server. For large-scale or non-typical deployment scenarios, such as OEM distribution, please get in touch. ### What is the cost of a Lingo3G license?[](#what-is-the-cost-of-a-lingo3g-license) The cost of a license depends on the [edition](https://carrotsearch.com/lingo3g/editions/), please [contact us](https://carrotsearch.com/contact/) for a quote. ### Is there a free version?[](#is-there-a-free-version) Yes, you can use the algorithms available in the [Carrot2](http://project.carrot2.org) open source framework. Please see the [comparison](#) for more details. ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo3g/free-trial/). ### Where can I learn more about Lingo3G?[](#where-can-i-learn-more-about-lingo3g) The best place to start would be the [Lingo3G Manual](https://get.carrotsearch.com/lingo3g/manual). For an in-depth introduction to search results clustering algorithms and engines, please see: _A survey of Web clustering engines_. ACM Computing Surveys (CSUR), Volume 41, Issue 3 (July 2009), Article No. 17, ISSN: 0360-0300 ([PDF](http://portal.acm.org/citation.cfm?id=1541880.1541884)). The paper reports on the evaluation of a number of search results clustering engines, including Lingo3G. ## Next steps - ### Browse Lingo3G manual - [Trying Lingo3G](https://get.carrotsearch.com/lingo3g/manual/trying-lingo3g/) - [Basic concepts](https://get.carrotsearch.com/lingo3g/manual/basic-concepts/) - [Installation](https://get.carrotsearch.com/lingo3g/manual/installation/) - [Clustering Workbench](https://get.carrotsearch.com/lingo3g/manual/clustering-workbench-app/) - [REST API](https://get.carrotsearch.com/lingo3g/manual/rest-api-basics/) - [Java API](https://get.carrotsearch.com/lingo3g/manual/java-api-basics/) - [Dictionaries](https://get.carrotsearch.com/lingo3g/manual/dictionaries/) - [Parameter reference](https://get.carrotsearch.com/lingo3g/manual/lingo3g-parameters) - ### Try and order - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Compared to Carrot2](https://carrotsearch.com/lingo3g/comparison/) - [Compared to Lingo4G](https://carrotsearch.com/lingo4g/comparison/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # Lingo3G or Carrot2? Use Lingo3G if you need high performance, extended tuning or hierarchical clusters. If you require source code or prefer free of charge solutions, try Carrot2.

An alternative to Lingo3G are open source clustering algorithms available in the Carrot2 framework. Here is how they compare.

(There is also Lingo4G or Lingo3G comparison.)
Lingo3GSTCLingo
License

Commercial

BSD, available in Carrot2

Hierarchical clustering

Check, supported

Supported. Lingo3G outputs mutli-level clusters.

Cross, not supported

Not supported. STC outputs flat cluster lists.

Cross, not supported

Not supported. Lingo outputs flat cluster lists.

Cluster label quality

Very high. Compact and meaningful labels, noise limited to a minimum.

Fair. Meaningful, but often one-word labels.

High. Meaningful labels, some noise words visible.

Customizable stop words

Check, supported

Supported

Check, supported

Supported

Check, supported

Supported

Label filtering

Suppressing specific words or phrases in the output cluster labels.

Check, supported

Supported. Very fast hash-based filtering, flexible regexp-based filtering.

Check, supported

Supported. Regexp-based filtering.

Check, supported

Supported. Regexp-based filtering.

Label boosting

Promoting specific words or phrases in the output cluster labels.

Check, supported

Supported. Very fast hash-based boosting, flexible regexp-based boosting.

Cross, not supported

Not supported

Cross, not supported

Not supported

Synonyms

Defining groups of words or phrases to be treated as synonymous.

Check, supported

Supported. Very fast hash-based synonym marking.

Cross, not supported

Not supported

Cross, not supported

Not supported

Structured data

Guiding text clustering by numeric or nominal data.

Check, supported

Supported

Cross, not supported

Not supported

Cross, not supported

Not supported

Document-to-cluster misassignment

Ratio of documents in a cluster that are irrelevant to the cluster label.

Low, especially with precise document assignment option enabled.

Medium, some irrelevant document may slip in.

Medium, some irrelevant document may slip in.

Results tuning

Advanced, many parameters for tuning different aspects of clusters and labels.

Basic set of parameters.

Basic set of parameters.

Further development

New features and performance improvements.

Bug fixes only.

Bug fixes only.

Performance

Time taken to cluster search results snippets*.

Number of snippetsLingo3GSTCLingo
1000.005 s**0.003 s0.054 s
5000.018 s0.015 s0.490 s
1,0000.029 s0.026 s0.847 s
10,0000.154 s0.218 s121.5 s***
1000001.561 s3.802 s—***
\*) Clustering speed measurements were done on Open Directory Project site descriptions coming from the Top/Computers category. Benchmark environment: Intel Core i7-2600K 3.4GHz, 12GB RAM, Windows 7. Java Virtual Machine: Sun JDK 1.7.0\_04 64bit, JVM switches: -server -Xmx1024m -Xms1024m. Time presented in the table is an average of 100 runs, for each algorithm time measurement was preceded by 100 untimed warm-up runs. \*\*) Lingo3G times refer to hierarchical clustering, while for Carrot2 algorithms the times reported refer to flat clustering because Carrot2 algorithms do not support hierarchical clustering. \*\*\*) Open Source edition is not scalable enough to reliably cluster very large numbers of documents. ## Questions and answers ### I integrated my code with Carrot2. How difficult will it be to switch to Lingo3G?[](#how-difficult-will-it-be-to-switch-from-carrot2-to-lingo3g) Lingo3G plugs into the API framework defined by Carrot2, so switching to Lingo3G will be a matter of adding a few JARs to your project and changing the source code to use the Lingo3G algorithm identifier. When it comes to tuning of clustering, each algorithm has its specific set of parameters, so after switching to Lingo3G you might need to tweak parameter values and lexical resources. ### Can I use Carrot2 algorithms in a commercial project?[](#can-i-use-carrot2-in-a-commercial-project) Absolutely! Carrot2 is distributed under the Apache 2.0 license, which is very commercially-friendly. ## Still in doubt? Get Lingo3G trial. Use Lingo3G for 2 months free of charge and compare it with Carrot2 on your own data. [Get a trial](https://carrotsearch.com/lingo3g/free-trial/) --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # Lingo3G editions Lingo3G editions are based on the number of documents clustered in one request. ## Mini Server Ideal for real-time clustering of search results - 1000 [docs per request](#definition-of-docs-per-request) - Deployed on one or more of your **servers** ## Full Server Fast processing of small and medium data sets - unlimited[\*](#definition-of-unlimited) [docs per request](#definition-of-docs-per-request) - Deployed on one or more of your **servers** ## OEM For redistribution as part of your software - unlimited[\*](#definition-of-unlimited) docs per request - **Embedded** and sold as part of your software **Docs per request**: number of documents analyzed at a time. \*) Limited only by CPU, memory and disk capacity. ## Included in all editions ![](https://carrotsearch.com/assets/flaticon/java.svg) ### Java API Calling Lingo3G natively from Java, JavaDoc and code examples included. ![](https://carrotsearch.com/assets/flaticon/coding.svg) ### REST API Calling from any programming language through the REST API. ![](https://carrotsearch.com/assets/flaticon/laptop.svg) ### End-user apps Clustering Workbench and search results clustering apps. ## Licensing terms ### Licensing period **One-year** and **perpetual** licenses are available for server editions. One-year license will stop working after 12 months. To continue using the software, you will need to purchase another one-year or perpetual license. Perpetual licenses will work indefinitely. ### Support and updates All server licenses come with **12 months of software maintenance**, which includes support, minor and major product updates. Beyond this initial 12 month period, at any time, you may add further 12 months of software maintenance to your license at 50% of the initial purchase price. All licenses come with several hours of free consulting, usually spent on integration with your existing software and clustering quality tuning. All licenses allow using Lingo3G internally for the evaluation, development, testing and tuning purposes. ### Licensing upgrades Upgrades from one-year to perpetual and from a lower to a higher edition (e.g. from Mini to Full Server) are possible within the validity period of the original license. ### Volume and OEM licensing For non-typical scenarios, such as large-scale server deployments or redistribution of Lingo3G as part of other software, licensing terms are negotiated separately to best match the customer's sales and distribution models. If you think you will need such a license, please get in touch to discuss the details. ### Pricing Please [contact us](https://carrotsearch.com/contact/) for further licensing and pricing information. ## Questions & Answers ### Are there any subscription fees?[](#are-there-any-subscription-fees) No. Both one-year and perpetual server licenses are available for a one-time licensing fee. ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo3g/free-trial/). ### Is there a free version?[](#is-there-a-free-version) Yes, you can use the algorithms available in the [Carrot2](http://project.carrot2.org) open source framework. Please see the [comparison](#) for more details. ### What kind of limits can my Lingo3G license include?[](#what-limits-can-my-lingo3g-license-include) Depending on your Lingo3G edition, your license file may limit the maximum number of documents Lingo3G will cluster in one request. If the limit is set to, for example, 1000, Lingo3G will cluster the first 1000 documents provided in the request body and put the remaining ones in the _Other topics_ cluster. ### Does Lingo3G limit the total size of my document collection?[](#does-lingo3g-limit-the-total-size-of-my-document-collection) No. Lingo3G does not store the contents of your documents, it requires that the documents to cluster be provided as part of the clustering request. The responsibility for storing and fetching documents for clustering rests with the code that calls Lingo3G. Therefore, the notion of the total size of the document collection is irrelevant to Lingo3G. ## Try Lingo3G for free Use fully-functional Full Server version for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo3g/free-trial/) --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # Lingo3G free trial Request trial license by e-mail, use Lingo3G free of charge for 2 months. 1. ## Request trial E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) to request your evaluation package. You will receive a fully functional 2-month Full Server license file. While we get your license ready, take a look at the [getting started chapter in Lingo3G manual](https://get.carrotsearch.com/lingo3g/manual/#chapter.getting-started). 2. ## Download software Upload your trial license file at: [https://secure.carrotsearch.com](https://secure.carrotsearch.com) to get download links for all Lingo3G APIs and tools. Lingo3G manual has [license file installation instructions](https://get.carrotsearch.com/lingo3g/manual/#section.license) that might come in handy. 3. ## Questions? If you have any questions or problems with Lingo3G, please [do get in touch](mailto:info@carrotsearch.com). Some more Lingo3G manual pointers you might find useful: - [Installation](https://get.carrotsearch.com/lingo3g/manual/installation/) - [Basic concepts](https://get.carrotsearch.com/lingo3g/manual/basic-concepts/) - [REST API](https://get.carrotsearch.com/lingo3g/manual/rest-api-basics/) - [Java API](https://get.carrotsearch.com/lingo3g/manual/java-api-basics/) ## Ready to purchase Lingo3G? Let us know by e-mail which edition you'd like.s [How to order](https://carrotsearch.com/lingo3g/how-to-order/) ## Questions & Answers ### What limitations will my trial license have?[](#what-limitations-will-my-trial-license-have) The only limitation of the evaluation license is the 2-month validity period. The license does not restrict functionality of Lingo3G in any way. All features, tools and APIs of the Full Server edition will be there for you to test. ### My trial license expired. Can I have some more time?[](#my-trial-expired-can-i-have-more-time) Absolutely, please contact us for an extension. --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # How does it work? Feed the text of **documents** to Lingo3G. In response, you'll get the **clusters**. Simple, stateless, wide choice of APIs. (Lingo3G needs to be installed on your servers. We don't offer hosted versions.) You can call Lingo3G clustering in 5 different ways. 1. ## End-user apps Go to [search.carrotsearch.com](https://search.carrotsearch.com/), type web search query and browse the results organized into clusters. To cluster data from Excel or CSV spreadsheets, try [Lingo3G Clustering Workbench](https://search.carrotsearch.com/#/workbench). For regular or private use of the end-user apps, [install](https://get.carrotsearch.com/lingo3g/manual/clustering-workbench-app/#installation-and-running) them on your workstation or server. ![Lingo3G Document Clustering Server quick start screen.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-workbench.jpg) **Lingo3G Clustering Workbench** is an app for clustering web search results, data from Excel or CSV spreadsheets, Solr or Elasticsearch engines. The screen shot shows 250 PubMed search results for query _vaccine_ clustered by Lingo3G. You can use the panel on the left to change the clustering parameters. Workbench can visualize the clusters using [FoamTree](https://carrotsearch.com/foamtree/) an [Circles](https://carrotsearch.com/circles/). 2. ## REST API [Start Lingo3G Document Clustering Server](https://get.carrotsearch.com/lingo3g/manual/rest-api-basics/#installation), send a [POST request](https://get.carrotsearch.com/lingo3g/manual/rest-api-basics/#/cluster) with documents in JSON format, receive a [JSON response](https://get.carrotsearch.com/lingo3g/manual/rest-api-basics/#/cluster:example-response) with clusters. ![Example Lingo3G REST API request and response.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-rest-api.png) **Lingo3G Document Clustering Server** (DCS) lets you invoke text clustering from any programming language. The screen shot shows a request clustering three example documents. 3. ## Java API Add [Lingo3G and dependencies](https://get.carrotsearch.com/lingo3g/manual/java-api-basics/#dependency-setup) to your project and you're [ready to go](https://get.carrotsearch.com/lingo3g/manual/java-api-basics/#basic-clustering). (Maven and Gradle are supported.) ![Lingo3G Java API code in IntelliJ IDE.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-java-api.png) Using **Lingo3G Java API** may be the easiest way to integrate text clustering into a Java-based application. Lingo3G Java API package comes with all the required JARs and a number of complete working code examples you can copy from. The screen shot shows Lingo3G Java API example code running inside IntelliJ IDE. 4. ## Solr plugin Install search results clustering plugin in your Solr instance and get document clusters right in the Solr responses. ![Solr response with search results clustered by Lingo3G.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-solr.png) With the help of **Lingo3G Solr plugin**, Lingo3G can run as part of Solr request handling pipeline and make search results clusters available directly in the Solr search responses. The screen shot shows an example Solr response containing document clusters created by Lingo3G. 5. ## Elasticsearch plugin Install [search results clustering plugin](https://github.com/carrot2/elasticsearch-carrot2) in your Elasticsearch instance and get document clusters right in the ES responses. ![Elasticsearch response with search results clustered by Lingo3G.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo3g-es-plugin.png) Using **Lingo3G Elasticsearch plugin**, Lingo3G can run as part of Elasticsearch request processing and make search results clusters available directly in the Elasticsearch search responses. The screen shot shows an example `curl` command triggering Lingo3G clustering of search results in Elasticsearch, along with a JSON response containing the clusters. ## Technical details If you'd like to delve into technical details, Lingo3G manual has them all. - - [Tools and APIs](https://get.carrotsearch.com/lingo3g/manual/#chapter.application-suite) — detailed description of all Lingo3G tools and APIs. - [Getting started](https://get.carrotsearch.com/lingo3g/manual/#chapter.getting-started) — clustering and integration quick start tutorials. - [Lexical resources](https://get.carrotsearch.com/lingo3g/manual/#chapter.lexical-resources) — documentation of stop word and other dictionaries. - [Tuning clustering](https://get.carrotsearch.com/lingo3g/manual/#chapter.tuning) — typical fine-tuning scenarios for Lingo3G clustering. - [Parameter reference](https://get.carrotsearch.com/lingo3g/manual/#chapter.components) — description of all Lingo3G tuning parameters. - [Release history](https://get.carrotsearch.com/lingo3g/manual/#section.introduction.versions) — release notes for all previous versions of Lingo3G. ## Try Lingo3G tools and APIs Use fully-functional versions for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo3g/free-trial/) --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # How to order Lingo3G Let us know by e-mail which edition you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The edition and the number of licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. We'll be happy to issue a temporary license to cover the payment processing period, just let us know. 3. ## Happy clustering! If you have any questions or problems with Lingo3G, please do get in touch. To receive new release notifications, sign up to Lingo3G announcements [mailing list](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Try Lingo3G for free. Evaluate fully-functional versions for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo3g/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-clustering-engine) No. Instead of refunds, we offer free of charge long-term evaluation licenses, so that you can try our software with your own data and decide if it works for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount-for-a-clustering-engine) We offer discounts for purchases of larger numbers of licenses, please [get in touch](mailto:info@carrotsearch.com) for details. Alternatively, consider [Carrot2](http://project.carrot2.org), which is an open source text clustering engine. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- - [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) - [How it works](https://carrotsearch.com/lingo3g/how-it-works/) - [Editions](https://carrotsearch.com/lingo3g/editions/) - [Comparison](https://carrotsearch.com/lingo3g/comparison/) - [How to order](https://carrotsearch.com/lingo3g/how-to-order/) - [Free trial](https://carrotsearch.com/lingo3g/free-trial/) # Carrot Search Lingo3G License Agreement By downloading, installing, copying, saving on your computer, or otherwise using this software, you (Licensee, as defined below) are becoming a party to this Agreement and you are consenting to be bound by all the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, you should not download, install or use the software. If there is a separate agreement in force between Carrot Search and the Licensee, Licensee will not be bound by this Agreement. Upon your acceptance of this Agreement, Carrot Search grants to you a non-exclusive and non-transferable license to use Lingo3G, provided that you agree to the following: 1. **Parties** 1. _Carrot Search_ means Carrot Search s.c., located at Boznicza 11/57, 61-751 Poznan, Poland. 2. _Licensee_ means the individual or legal entity specified in the License File defined below. 2. **Definitions** 1. _Lingo3G_ means a software system for automatic clustering of textual information into hierarchical groups. Lingo3G is distributed in a binary form along with documentation. 2. _Integration Code_ means the source code provided by Carrot Search to Licensee to facilitate integration of Lingo3G with the software developed by Licensee. 3. _License File_ means electronic evidence and specification of the license granted to the Licensee by Carrot Search. A License File enables the use of Lingo3G. Only Carrot Search is permitted to produce License Files for Lingo3G. 4. _Licensing Period_ means the perpetual or limited period in which Licensee can use Lingo3G. Licensing Period is specified in the License File. 5. _Maintenance Period_ means the limited period in which Licensee is entitled to upgrade to new versions of Lingo3G and receive support. Maintenance Period is specified in the License File. 6. _Server_ means a computer controlled by Licensee which runs Lingo3G for the purposes of delivering services to end users. Identification of the Server in the License File may vary based on the characteristics of Licensee's software that uses Lingo3G. 3. **Ownership** 1. Lingo3G is the property of Carrot Search. Lingo3G is licensed, not sold. Title and copyrights to Lingo3G, in whole or in part, and all copies thereof, and all modifications, enhancements, derivatives and other alterations of Lingo3G, regardless of who made them, if any, are, and will remain, the sole and exclusive property of Carrot Search. 2. The structure, organization, and code embodied in Lingo3G, except for Integration Code, are valuable and confidential trade secrets of Carrot Search and are protected by copyright laws, intellectual property laws and treaties. Licensee agrees to abide by the copyright law and all other applicable laws. 4. **Grant of license** Subject to the terms, conditions, and limitations set forth in this Agreement, Carrot Search hereby grants to Licensee a worldwide, limited, non-exclusive, non-transferable license to use Lingo3G as follows: 1. Licensee may: 1. use Lingo3G on the Server or Servers identified in the License File for the purposes of delivering services to end users during the Licensing Period; 2. use Lingo3G on computers controlled by Licensee for the purposes of development of Licensee's software dependent on Lingo3G during the Licensing Period; 3. upgrade to any version of Lingo3G released during the Maintenance Period; 4. include Integration Code, in entirety or in parts, in the software developed by Licensee; 5. make back-up copies of Lingo3G and License File solely for archival purposes; 6. use Lingo3G during Evaluation Period, as described in Section 5, without purchasing a License File. 2. Licensee may not: 1. sell, redistribute, encumber, give, lend, rent, lease, sublicense, or otherwise transfer Lingo3G, or any portions of Lingo3G, to anyone without the prior written consent of Carrot Search; 2. reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code of Lingo3G, or create derivative works from Lingo3G; 3. allow the use of Lingo3G on Servers not identified in the License File; 4. disable, remove or circumvent the license terms enforcement mechanisms built into Lingo3G. Any attempt to do so will be in violation of this Agreement and will terminate Licensee's rights to use Lingo3G. 3. Carrot Search will: 1. promptly, and in any event within 72 hours, respond to e-mail requests for support that are made during mutually agreed upon business hours, taking into account time zone differences, except weekends and holidays; 2. notify Licensee of and provide any bug fix and new releases of Lingo3G; 3. provide a number of free consulting hours, specified in the License File, for integration code adjustments, performance tuning and extra documentation. Any additional technical support shall be charged at standard Carrot Search hourly rate. 5. **Restricted use during Evaluation Period** 1. Subject to the terms of this Agreement, Licensee is granted a right to use Lingo3G for evaluation purposes without charge for a period defined in the evaluation License File (_Evaluation Period_); 2. Licensee's use of Lingo3G during the Evaluation Period shall be limited to the internal evaluation of the software for the sole purpose of determining whether Lingo3G meets Licensee's requirements and whether Licensee desires to continue using Lingo3G; 3. Upon expiration of Evaluation Period, Licensee must obtain a License File to continue using Lingo3G or cease using Lingo3G immediately; 4. Upon Licensee's request, Carrot Search may, at its discretion, extend the Evaluation Period. 6. **Disclaimer of warranty** Lingo3G is provided on an "as is" without warranties of any kind, express, implied or statutory, including but not limited to, the implied warranties of title, noninfringement, merchantability and fitness for a particular purpose. 7. **Disclaimer of damages** 1. Regardless of whether any remedy set forth herein fails of its essential purpose, in no event will Carrot Search be liable to Licensee under any theory for any damages suffered by Licensee or any user of Lingo3G, or for any special, incidental, indirect, consequential, or similar damages (including without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use or inability to use Lingo3G, or the provision of or failure to provide support services, even if Carrot Search has been advised of the possibility of such damages, and regardless of the legal or equitable theory (contract, tort or otherwise) upon which the claim is based; 2. In any case, Carrot Search's entire liability under any provision of this agreement will be limited to the amount actually paid by licensee for Lingo3G. 8. **Term and Termination** This Agreement takes effect upon Licensee's acceptance of the terms of this Agreement and remains effective until terminated by either party in accordance with this Agreement. Licensee may terminate this Agreement at any time by destroying all copies of Lingo3G. This Agreement will automatically terminate if Licensee fails to comply with any term or condition of this Agreement. Upon termination of this Agreement, Licensee warrants that they will immediately destroy all copies of Lingo3G. 9. **General** 1. Unless the Licensee explicitly opts out by notifying the Carrot Search, the Licensee agrees to be identified as a customer of Carrot Search and that Carrot Search may refer to Licensee by name, trade name and trademark on Carrot Search web site and marketing materials; 2. Carrot Search reserves the right at any time to cease the support of Lingo3G and to alter prices, features, specifications, capabilities, functions, licensing terms, release dates, general availability or other characteristics of Lingo3G; 3. This Agreement, including Third Party Software license agreements, constitutes the entire agreement between the parties concerning Licensee' use of the Software, and supersedes any and all prior or contemporaneous oral or written representations, communications, or advertising with respect to the Software. No purchase order, other ordering document or any hand written or typewritten text which purports to modify or supplement the printed text of this Agreement or any schedule will add to or vary the terms of this Agreement unless signed by both Licensee and Carrot Search. 4. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach. The provisions of this Agreement which require or contemplate performance after the expiration or termination of this Agreement will be enforceable notwithstanding said expiration or termination. 5. This Agreement will be construed under the laws of the Polish trade and European Union, without regard to conflicts of laws provisions thereof. This Agreement and the performance of all obligations hereunder shall be governed according to Polish Law and the parties hereto hereby submit to the jurisdiction of the Polish Courts. All civil suits between the parties hereto shall be adjudicated by a common court with official residence in Poznan, Poland. 6. Titles are inserted for convenience only and will not affect in any way the meaning or interpretation of this Agreement. If any provision of this Agreement is held invalid, the remainder of this Agreement will continue in full force and effect. Either Licensor or Licensee may assign this Agreement in the case of a merger or sale of substantially all of its respective assets to another entity. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and assigns. --- # Clustering engine for millions of documents and gigabytes of text [Free trial](https://carrotsearch.com/lingo4g/free-trial/) ![2d zoomable map of PubMed articles on vaccination produced by Lingo4G large-scale text clustering engine.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-explorer-doc-map.jpg) Lingo4G is a software component you can use to implement interactive exploration of millions of documents spanning gigabytes of text. Lingo4G Explorer, pictured in the screen shot, shows what you can build with Lingo4G REST API. Lingo4G Explorer is also a great tool for quick experiments with Lingo4G-powered large-scale text clustering. The screen shot shows a 2D map visualization of 3.5k medical paper abstracts related to vaccines. Textually-similar abstracts are clustered together on the map. The panel on the right shows the top abstracts lying in the map region described as _measles vaccine_. Phases specific to the selected map region are highlighted in the text of the abstract. Note: analysis presented in the screen shot took 2.76s to compute on a modern 16-core workstation with SSD storage. Analysis times will vary depending on the parameters of your hardware. - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) ## Meaningful insights from large quantities of text Lingo4G enables interactive exploration of millions of documents and gigabytes of text. In near-real-time, fully automatically, without external knowledge bases. ![](https://carrotsearch.com/assets/flaticon/map-location.svg) ### Overview and drill-down Get an overview of thousands of documents within seconds, instantly drill-down to documents of interest. ![](https://carrotsearch.com/assets/flaticon/more-2.svg) ### Flexible API Build custom text mining pipelines ranging from simple search to 2D mapping, time-series analysis and duplicate detection. ![](https://carrotsearch.com/assets/flaticon/pie-circular-graphic-with-bars-in-the-center-part-thin-symbol-outline-inside-a-circle.svg) ### Engaging visualizations Combine topics, clusters and 2D document maps into powerful visualizations. ![A graph of gene-related topics extracted from 350k PubMed abstracts by Lingo4G large-scale text clustering engine.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-explorer-topic-graph.png) Lingo4G can extract the topics discussed in hundreds of thousands of documents within seconds. The screen shot shows subtopics of the _gene_ topic identified in nearly 350k abstracts of medical articles. The graph presents lexical relationships between subtopics, while the content view on the right side shows topical phrases in context by highlighting them in the text of the analyzed documents. Note: analysis presented in the screen shot took 2.76s to compute on a modern 16-core workstation with SSD storage. Analysis times will vary depending on the parameters of your hardware. ### Near-real-time topic discovery Lingo4G can extract the topics discussed in hundreds of thousands of documents, along with lexical relationships between them, within seconds. ### Topical phrases in context Lingo4G can _highlight_ selected topical phrases in the document text to put them in context and bring up the relevant parts. ### Large-scale processing Lingo4G can arrange hundreds of thousands of documents into non-overlapping clusters and 2D maps to help plan, execute and refine research. ### Data slicing and filtering Choose the document subset to analyze by typing a query, picking an area from the document map or selecting a topic or cluster to drill down on. ![An interactive map of 128k SuperUser.com questions produced by Lingo4G large-scale text clustering engine.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-explorer-doc-map-large.jpg) On modern hardware, Lingo4G can generate document clustering and map visualizations for hundreds of thousands of documents within minutes. The screen shot shows the map of 128k SuperUser.com questions. Each dot represents one document, colors correspond to top-level document clusters. Different thematic areas are clearly visible: _Excel_\-related questions in the top-right corner, network issues in the bottom-left corner, posts about web browsers in the middle. Smaller outlier groups, such as questions about disk drives (_RAID_, _SATA_) are also highlighted. Note: analysis presented in the screen shot took about 1 minute to compute on a modern 16-core workstation with SSD storage. Analysis times will vary depending on the parameters of your hardware. ![A list of labels semantically similar to Germany, based on English Wikipedia.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-vocabulary-explorer.png) Lingo4G can build multidimensional vector representations of words, phrases and documents. Similar to word2vec, these representation can be used to find semantic relationships between labels and documents. The screenshot shows a list of words and phrases similar to _Germany_, based on English Wikipedia data. Notice that the top of the list is occupied by European countries near Germany. The relationships were derived based only on the text of the input documents, no external taxonomies or resources were used. ### Semantic relationships between words, phrases and documents Lingo4G can build vector representations of words, phrases and documents. They allow finding semantically-similar documents, even if the documents don't share common words or phrases. All text processing tasks available in Lingo4G, such as document search, clustering or 2D mapping, can use vector-based semantic similarity. ### Flexible API Lingo4G exposes all its text processing capabilities through a flexible REST/JSON API. The API allows assembling simple text processing components into pipelines of varying complexity. The tasks you can perform include: - document search and retrieval, - document clustering and 2D mapping, - extracting topics from documents, - finding near-duplicate documents. ![Lingo4G analysis API request to find more documents similar to the user-provided document.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-json-sandbox-diagram.png) Lingo4G exposes all its text processing capabilities through a flexible REST/JSON API. The screenshot shows the JSON Sandbox app, which you can use to edit, execute and tune Lingo4G analysis requests. The request shown in the screenshot finds documents that are similar to the user-provided _seed_ document. The panel on the right shows the data flow between the low-level text processing components defined by the request. ## Fast, automatic, easy to integrate ![](https://carrotsearch.com/assets/flaticon/direction-post.svg) ### Fast indexing Lingo4G can index 200–2000 MB of text per minute. Adding, updating or deleting docs does not require reindexing. ![](https://carrotsearch.com/assets/flaticon/stopwatch-4.svg) ### Near-real-time processing Once Lingo4G indexes your collection, it can extract topics, cluster or 2D-map document within seconds. ![](https://carrotsearch.com/assets/flaticon/database-3.svg) ### No external taxonomies Lingo4G processes documents based only on their textual content, no external dictionaries or taxonomies required. ![](https://carrotsearch.com/assets/flaticon/binary-code.svg) ### Semantic processing Lingo4G can learn vector representations of documents and phrases to identify semantic relationships in data. ![](https://carrotsearch.com/assets/flaticon/clusters.svg) ### Clustering Lingo4G can organize documents into labeled groups, based on keyword or semantic vector similarity. ![](https://carrotsearch.com/assets/flaticon/map.svg) ### 2D mapping Lingo4G can lay out documents on a labeled 2D map, keeping similar documents close, based on keyword or vector similarity. ![](https://carrotsearch.com/assets/flaticon/tree-of-rectangles-foliage.svg) ### Duplicate detection Lingo4G can identify pairs of documents with highly-overlapping content, which you can use to detect duplicates or plagiarism. ![](https://carrotsearch.com/assets/flaticon/magic-wand.svg) ### Stop word discovery Lingo4G can automatically identify the meaningless phrases specific to your data, such as _present invention_ for patent data. ![](https://carrotsearch.com/assets/flaticon/loupe.svg) ### Full-text search Should you need the good old full-text search over your collection, Lingo4G can do that too. ![](https://carrotsearch.com/assets/flaticon/controls-1.svg) ### Tuning The Lingo4G Explorer application will let you get started quickly and tune every aspect of topic extraction and clustering. ![](https://carrotsearch.com/assets/flaticon/more-2.svg) ### Easy integration Lingo4G exposes a JSON-based REST API you can call from any programming language to get analysis results. ![](https://carrotsearch.com/assets/flaticon/coding-json.svg) ### Custom analysis pipelines Use REST API to build more complex pipelines, such as nearest-neighbor classification or time series analysis. ## Questions & Answers ### What are the applications of Lingo4G?[](#what-are-the-applications-of-lingo4g) The natural use case is exploration of large volumes of human-readable text, such as scientific papers, business or legal documents. You can combine Lingo4G basic text processing operations to build, for example, the following functionalities: - Recommending tags for a new document based on the tags of the documents existing in the index. - Example-based document search: finding documents similar to the example _seed_ document the user provides, based on keyword or semantic vector similarity. - 2D map visualization of documents where semantically-similar documents occupy the same area of the map. Colors of the document marker on the map indicate the cluster to which the document belongs. Salient phrases extracted from documents describe the densely-populated areas of the map. - Finding documents with highly overlapping content, which may suggest the documents are duplicates or plagiarised copies. Lingo4G can perform such a process efficiently for millions of documents at once. ### What is the largest collection Lingo4G can handle?[](#what-is-the-largest-collection-lingo4g-can-handle) On modern hardware with a high-core-count CPU and fast SSD storage, Lingo4G can handle collections reaching hundreds of gigabytes or a terabyte of text. If you'd like to test Lingo4G on such a large data set, Lingo4G comes with built-in support for indexing patent grant and application documents available from US Patent and Trademark Office. The collection is currently about 500 GB of text. One important factor to consider is that currently Lingo4G does not offer distributed processing. This means that the maximum reasonable size of the project will be limited by the amount of RAM, disk space and processing power available on a single virtual or physical server. ### Which languages does Lingo4G support?[](#what-languages-does-lingo4g-support) Currently, Lingo4G can only process English text. If you'd like to apply Lingo4G to content written in a different language, please contact us. ### What are the system requirements for Lingo4G?[](#what-are-the-requirements-for-lingo4g) Lingo4G can run on any platform supporting Java 17 or later. While processing cannot currently be distributed to multiple machines, a high-end workstation with fast SSD storage should be capable of handling collections of several tens of gigabytes. For most data sets not exceeding gigabytes, any computer with 4GB of memory and some disk space will be sufficient. We very much recommend using SSD drives to store Lingo4G indices. Please see the [Requirements](https://get.carrotsearch.com/lingo4g/latest/doc/v2/requirements/) section of Lingo4G manual for more details. ### How is Lingo4G licensed?[](#how-is-lingo4g-licensed) We require one Lingo4G license per one physical or virtual server that runs Lingo4G binaries, regardless of the number of cores on the server, the number of users and number of collections handled by the server. For large-scale or non-typical deployment scenarios, such as OEM distribution, please get in touch. ### How many collections can I process on one server?[](#how-many-collections-can-i-process-on-one-server) There are no restrictions on the number of Lingo4G instances running on one physical or virtual server. The only limit may be the capacity of the server, including RAM size, disk space and the number of CPUs. ### What is the cost of a Lingo4G license?[](#what-is-the-cost-of-a-lingo4g-license) The cost of a license depends on the [edition](https://carrotsearch.com/lingo4g/editions/), please [contact us](mailto:info@carrotsearch.com) for a quote. ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo4g/free-trial/). ### I have a Lingo3G license, will I receive Lingo4G as an upgrade?[](#is-lingo4g-an-upgrade-to-lingo3g) No. Lingo3G and Lingo4G are two separate products we intend to offer and maintain independently. Lingo3G will remain an engine for real-time clustering of small and medium collections, while Lingo4G will address clustering of large data sets. Therefore, Lingo4G is not an upgrade to Lingo3G, but a complementary offering. Having said that, if you would like to switch from Lingo3G to Lingo4G, we offer a license trade-in option and count the initial Lingo3G license purchase fee towards the Lingo4G license fee. ### Can I use the dotAtlas map visualization component in my application?[](#can-i-use-map-visualization-component-in-my-application) The dotAtlas map visualization component shipping with Lingo4G Explorer is currently pre-release software. It's been battle-tested for months by early adopters, but lacks finalized API and documentation. If you'd like to try integrating dotAtlas into your software, please let us know. We'll be happy to share the pre-release version along with code examples and initial guidance. We will not charge any extra fees for the pre-release versions of dotAtlas. Once it enters the official product suite, the use of dotAtlas will require a license fee similar to the one that applies for Carrot Search FoamTree. ## Next steps - ### Browse Lingo4G manual - [Quick start](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start/) - [Architecture](https://get.carrotsearch.com/lingo4g/latest/doc/v2/architecture/) - [Indexing](https://get.carrotsearch.com/lingo4g/latest/doc/v2/indexing/) - [Analysis](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis/) - [Requirements](https://get.carrotsearch.com/lingo4g/latest/doc/v2/requirements/) - [Tools & apps](https://get.carrotsearch.com/lingo4g/latest/doc/v2/tools-and-apps/) - [REST API](https://get.carrotsearch.com/lingo4g/latest/doc/v2/rest-api-v2/) - ### Try and order - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Compared to Lingo3G](https://carrotsearch.com/lingo4g/comparison/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # Lingo4G or Lingo3G? Use Lingo4G for collections of any size available in advance for indexing. Lingo3G is for small and medium amounts of ad-hoc data.

Despite similar names, Lingo4G and Lingo3G are fundamentally different with respect to architecture, intended use cases and integration options. The following table summarizes the key differences.

Lingo4GLingo3G
Primary use case

Analysis of small and large sets of documents where the collection a as a whole can be accessed for indexing.

Good examples of such collections are the PubMed medical articles or Wikipedia data dumps, which can be downloaded for off-line processing.

Clustering of small and medium collections of ad-hoc, previously unseen textual content.

Typical example of such content is search results from public search engines. While specific search results can be accessed on demand, complete contents of all documents in the collection is not available.

Architecture

Stateful. Lingo4G first needs to create a persistent index of all your documents. Once the index is created, you can request Lingo4G to analyze the whole indexed collection or different subsets of it. Including previously unseen documents in analyses requires re-indexing.

The split into two phases allows Lingo4G to perform the expensive operations, such as tokenization of documents, only once during indexing. The index makes it then possible to analyze the whole collection or any subset of it in near-real-time.

Stateless. Lingo3G performs processing in one step, all documents provided on input will be immediately processed and disposed of.

The stateless paradigm makes it possible to process arbitrary and previously unseen documents. The cost is that the time-consuming operations, such as tokenization, will be repeated for each set of documents being processed.

Maximum size of data analyzed at once

Millions of documents. The practical limit for the total size of the analyzed collection is about 1 TB of text.

Thousands of documents. The practical limit for Lingo3G's in-memory processing model is about 10 MB of text.

Memory requirements

Dependent on the specific analysis task. Lingo4G does not need to keep the text being analysed in-memory.

For example, the memory requirements for label clustering depend on the number of selected labels, not the number of documents in scope. Therefore, label clustering can be applied to gigabytes of text and hundreds of thousands of documents while keeping memory requirements limited.

Increasing with the number and size of documents. Lingo3G keeps the input documents and their internal representation in-memory for the duration of processing.

To ensure high-speed real-time processing, Lingo3G's internal representation of documents takes several times the size of the raw input text. Therefore, Lingo3G is not recommended for clustering more of about 10 MB of text at once.

Result facets

Lingo4G can perform a range of analysis tasks, including:

  • query-based document search,
  • document text retrieval with query match highlighting,
  • collecting labels from documents,
  • finding semantically-similar labels,
  • finding semantically-related documents,
  • clustering labels or documents,
  • 2d mapping of labels or documents,
  • k-nearest-neighbors classification,
  • duplicate content detection.

Lingo3G results are conceptually similar to Lingo4G topic extraction. Conventional document clustering is not available in Lingo3G.

APIs and integration

Lingo4G comes with a standalone server application that exposes an HTTP/REST API. The server can run in any environment supporting Java 11 or later.

  • Java API
  • C# API
  • HTTP/REST API
  • Apache Solr plugin
  • Elasticsearch plugin
## Questions and answers ### I have a **50 GB collection of patent applications**. I want to **extract topics for up to 1000-document subsets** of that collection. Which engine is better in this case?[](#topic-extraction-on-1000-doc-subsets-of-50gb-collection) Both Lingo4G and Lingo3G are suitable in this case. Lingo4G will create an index for your collection, which will give you the ability not only to extract topics, but also to search your collection, perform conventional document clustering, produce 2d document maps and complete more advanced text mining tasks, such as classification. In case of Lingo3G, the easiest way to process your collection would be to index it in, for example, Apache Solr or Elasticsearch. Then, depending on the architecture of your software, you would either fetch documents from your search engine and feed them to Lingo3G Java/C# API for clustering, or have your search results clustered directly inside the search engine through Solr or Elasticsearch plugins. ### I have a **fast-growing collection** of social conversations and I'd like to detect emerging topics in that data. Is Lingo4G or Lingo3G suitable for the task?[](#emerging-topic-detection-in-fast-growing-collection) While neither Lingo4G nor Lingo3G have a specific feature of emerging topic discovery, they will likely be useful components of such systems. Currently, Lingo4G's fast incremental indexing option does not discover new phrases introduced by new documents. To allow Lingo4G to pick up new phrases from newly-added conversations, features would have to be periodically re-generated based on the whole collection. This may not be a problem if it is acceptable for the new phrases to enter analysis on, for example, daily basis. If it is required for the new content to be considered immediately after it arrives, the only applicable engine is currently Lingo3G, possibly coupled with Apache Solr or Elasticsearch. ### I have a collection of 1 million research papers and I'd like to **extract topics for up to 200k-document subsets at once**. Which engine can handle that task?[](#topic-extraction-on-200k-docs-from-1m-collection) Only Lingo4G can handle topic extraction for such large subsets of your collection. Its on-disk index makes it possible to analyze hundreds of thousands of documents within a limited memory footprint. Lingo3G with its in-memory processing model is not suitable for inputs exceeding 10 MB of text. ### I'd like to cluster search results fetched from **public search engines**. Is Lingo4G suitable for this?[](#clustering-search-results-from-public-search-engine) No, the only engine that fits here is Lingo3G. Before clustering, Lingo4G needs to access the entire collection of documents in advance to create an index. In case of public search engines, the underlying collection is not usually available as a whole, which rules out Lingo4G[\*](#ad-hoc-processing-in-lingo4g). Lingo3G, on the other hand, was designed to cluster data in one pass — you'd simply fetch the text of search results from the search engine, feed the text to Lingo3G and receive the search results clustered. \*) One could imagine creating a temporary throwaway index just for the search results received from the search engine, which would make Lingo4G applicable as well. Currently, however, Lingo4G does not specifically support creating temporary indices, which makes the workaround cumbersome. Also, Lingo3G is optimized to perform real-time clustering of small data sets, so clustering of search results in Lingo3G will be much faster. ## Still in doubt? Use both Lingo4G and Lingo3G for 2 months free of charge to see which is a better fit for your data. [Lingo4G trial](https://carrotsearch.com/lingo4g/free-trial/) [Lingo3G trial](https://carrotsearch.com/lingo3g/free-trial/) --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # Lingo4G editions Lingo4G editions are based on the total size of the indexed documents and the number of documents analyzed in one request. ## Small Server For simple research or as an alternative to Lingo3G - 1 GB [indexed docs](#definition-of-indexed-docs) Enough for clinicaltrials.gov, IMDb, research.gov - 10k [docs per request](#definition-of-docs-per-request) - Deployed on one or more of your **servers** ## Medium Server Good for the majority of typical data sets - 5 GB [indexed docs](#definition-of-indexed-docs) Enough for all SuperUser.com questions and answers - 50k [docs per request](#definition-of-docs-per-request) - Deployed on one or more of your **servers** ## Large Server For complex research and large data sets - 25 GB [indexed docs](#definition-of-indexed-docs) Enough for all articles from English Wikipedia - 250k [docs per request](#definition-of-docs-per-request) - Deployed on one or more of your **servers** ## Unlimited Server For massive data sets - unlimited[\*](#definition-of-unlimited) indexed docs Required for PubMed Open Access or US patents data set. - unlimited[\*](#definition-of-unlimited) docs per request - Deployed on one or more of your **servers** ## OEM For redistribution as part of your software - unlimited[\*](#definition-of-unlimited) indexed docs - unlimited[\*](#definition-of-unlimited) docs per request - **Embedded** and sold as part of your software **Indexed docs**: total size of content in your collection. **Docs per request**: number of documents analyzed at a time. \*) Limited only by CPU, memory and disk capacity. ## Included in all editions ![](https://carrotsearch.com/assets/flaticon/idea.svg) ### Topic discovery Near-real time extraction of clearly-labelled themes present in your documents. ![](https://carrotsearch.com/assets/flaticon/clusters.svg) ### Document clustering Grouping content-wise similar documents into non-overlapping clusters. ![](https://carrotsearch.com/assets/flaticon/map-location.svg) ### Document embedding Arranging documents into 2d maps with textually-similar docs grouped together. ![](https://carrotsearch.com/assets/flaticon/tree-of-rectangles-foliage.svg) ### Duplicate detection Lingo4G can identify pairs of documents with highly-overlapping content, which you can use to detect duplicates or plagiarism. ![](https://carrotsearch.com/assets/flaticon/magic-wand.svg) ### Stop word discovery Lingo4G can automatically identify the meaningless phrases specific to your data, such as _present invention_ for patent data. ![](https://carrotsearch.com/assets/flaticon/loupe.svg) ### Full-text search Full-text search over the whole collection with support for complex interval-based queries. ![](https://carrotsearch.com/assets/flaticon/coding-json.svg) ### Custom analysis pipelines Use REST API to build more complex pipelines, such as nearest-neighbor classification or time series analysis. ![](https://carrotsearch.com/assets/flaticon/coding.svg) ### REST API Calling Lingo4G from any programming language, Java and Node.js examples provided. ![](https://carrotsearch.com/assets/flaticon/laptop.svg) ### Command line interface CLI application for indexing and analyzing your content in Lingo4G. ![](https://carrotsearch.com/assets/flaticon/flask.svg) ### Lingo4G Explorer Web application for experimenting with and tuning Lingo4G processing. ![](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-lines.svg) ### FoamTree visualization When used as part of Lingo4G Explorer. (Use outside of Explorer requires a license.) ![](https://carrotsearch.com/assets/flaticon/map.svg) ### dotAtlas visualization When used as part of Lingo4G Explorer. (Use outside of Explorer requires a license.) ## Licensing terms ### Licensing period **One-year** and **perpetual** licenses are available for server editions. One-year license will stop working after 12 months. To continue using the software, you will need to purchase another one-year or perpetual license. Perpetual licenses will work indefinitely. ### Support and updates All server licenses come with **12 months of software maintenance**, which includes support, minor and major product updates. Beyond this initial 12 month period, at any time, you may add further 12 months of software maintenance to your license at 50% of the initial purchase price. All licenses come with several hours of free consulting, usually spent on integration with your existing software and clustering quality tuning. All licenses allow using Lingo4G internally for the evaluation, development, testing and tuning purposes. ### Pricing Please [contact us](https://carrotsearch.com/contact/) for further licensing and pricing information. ### Licensing upgrades Upgrades from one-year to perpetual and from a lower to a higher edition (e.g. from Medium to Large) are possible within the validity period of the original license. ### Volume and OEM licensing For non-typical scenarios, such as large-scale server deployments or redistribution of Lingo4G as part of other software, licensing terms are negotiated separately to best match the customer's sales and distribution models. If you think you will need such a license, please get in touch to discuss the details. ### Lingo3G license trade-in Holders of perpetual Lingo3G licenses can "trade in" their Lingo3G license to receive a Lingo4G license. We will count the initial purchase price (but not the maintenance extension fees) paid for Lingo3G towards the price of the Lingo4G license you wish to switch to. Once you trade-in your Lingo3G license, you will not be allowed to use Lingo3G with that license any more. To cover the Lingo3G to Lingo4G transition period, we'll issue long-term Lingo4G evaluation licenses. ## Questions & Answers ### Are there any subscription fees?[](#are-there-any-subscription-fees) No. Both one-year and perpetual server licenses are available for a one-time licensing fee. ### How many collections can I process on one server?[](#how-many-collections-can-i-process-on-one-server) There are no restrictions on the number of Lingo4G instances running on one physical or virtual server. The only limit may be the capacity of the server, including RAM size, disk space and the number of CPUs. ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo4g/free-trial/). ### I have a Lingo3G license, will I receive Lingo4G as an upgrade?[](#is-lingo4g-an-upgrade-to-lingo3g) No. Lingo3G and Lingo4G are two separate products we intend to offer and maintain independently. Lingo3G will remain an engine for real-time clustering of small and medium collections, while Lingo4G will address clustering of large data sets. Therefore, Lingo4G is not an upgrade to Lingo3G, but a complementary offering. Having said that, if you would like to switch from Lingo3G to Lingo4G, we offer a license trade-in option and count the initial Lingo3G license purchase fee towards the Lingo4G license fee. ### What kind of limits can my Lingo4G license include?[](#what-limits-can-my-lingo4g-license-include) Depending on your Lingo4G edition, your license file may include two limits: - **Maximum total size of indexed documents,** defined by the `max-indexed-content-length` attribute of your license file. The limit restricts the maximum total size of the text indexed for the purposes of Lingo4G analysis. Text stored in the index only for literal retrieval is not counted towards the limit. - **Maximum number of documents analyzed in one request,** defined by the `max-documents-in-scope` attribute of your license file. The limit defines the maximum size of the subset of your collection Lingo4G will analyze at a time. If the number of documents matching the subset definition query exceeds the limit, Lingo4G will ignore the lowest-scoring documents. For example, the Medium Server edition will allow you to index all 240k (spanning about 3GB) questions from SuperUser.com and will cluster or extract topics for at most 50k questions at a time. If you request processing of a subset larger than 50k questions, Lingo4G will analyze the top 50k questions matching the subset definition query. The above limits are enforced for each Lingo4G instance separately. ### Is the total number of documents in the index limited?[](#is-the-total-number-of-docs-in-the-index-limited) No. Regardless of your Lingo4G edition, there will be no license-enforced limits on the total number of documents in Lingo4G index. ## Take Lingo4G for a spin Use fully-functional Unlimited Server version for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo4g/free-trial/) --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # Questions & answers (For questions not covered here and in [Lingo4G reference](https://get.carrotsearch.com/lingo4g/latest/doc/v2/), please do [get in touch](https://carrotsearch.com/contact/).) ## Licensing [How is Lingo4G licensed?](#how-is-lingo4g-licensed) [What is the cost of a Lingo4G license?](#what-is-the-cost-of-a-lingo4g-license) [Are there any subscription fees?](#are-there-any-subscription-fees) [Can I get a trial license?](#can-i-get-a-trial-license) [How many collections can I process on one server?](#how-many-collections-can-i-process-on-one-server) [Is the total number of documents in the index limited?](#is-the-total-number-of-docs-in-the-index-limited) [What kind of limits can my Lingo4G license include?](#what-limits-can-my-lingo4g-license-include) [I have a Lingo3G license, will I receive Lingo4G as an upgrade?](#is-lingo4g-an-upgrade-to-lingo3g) ## Evaluation [Can I get a trial license?](#can-i-get-a-trial-license) [What limitations will my trial license have?](#what-limitations-will-my-trial-license-have) [My trial license expired. Can I have some more time?](#my-trial-expired-can-i-have-more-time) ## Ordering [Can I pay by credit card?](#can-i-pay-by-credit-card) [Can I get a refund?](#can-i-get-a-refund-for-a-clustering-engine) [Can I get a discount?](#can-i-get-a-discount-for-a-clustering-engine) [Can I get a formal quote?](#can-i-get-a-formal-quote) [Do you accept Purchase Orders?](#do-you-accept-purchase-orders) [Can I purchase training services?](#can-i-purchase-training-services) ## Technical issues [Can I add, update or remove documents from an existing Lingo4G index?](#can-i-add-update-or-remove-documents) [Does Lingo4G come as an Elasticsearch or Solr plugin?](#does-lingo4g-come-as-es-or-solr-plugin) [Is Lingo4G an end-user product?](#is-lingo4g-an-end-user-product) [What are the system requirements for Lingo4G?](#what-are-the-requirements-for-lingo4g) [What does near real-time processing mean?](#what-does-near-real-time-processing-mean) [What is the largest collection Lingo4G can handle?](#what-is-the-largest-collection-lingo4g-can-handle) [Which languages does Lingo4G support?](#what-languages-does-lingo4g-support) [Can I use the dotAtlas map visualization component in my application?](#can-i-use-map-visualization-component-in-my-application) ## Use cases [What are the applications of Lingo4G?](#what-are-the-applications-of-lingo4g) [I'd like to cluster search results fetched from **public search engines**. Is Lingo4G suitable for this?](#clustering-search-results-from-public-search-engine) [I have a **fast-growing collection** of social conversations and I'd like to detect emerging topics in that data. Is Lingo4G or Lingo3G suitable for the task?](#emerging-topic-detection-in-fast-growing-collection) [I have a **50 GB collection of patent applications**. I want to **extract topics for up to 1000-document subsets** of that collection. Which engine is better in this case?](#topic-extraction-on-1000-doc-subsets-of-50gb-collection) [I have a collection of 1 million research papers and I'd like to **extract topics for up to 200k-document subsets at once**. Which engine can handle that task?](#topic-extraction-on-200k-docs-from-1m-collection) ## Licensing ### How is Lingo4G licensed?[](#how-is-lingo4g-licensed) We require one Lingo4G license per one physical or virtual server that runs Lingo4G binaries, regardless of the number of cores on the server, the number of users and number of collections handled by the server. For large-scale or non-typical deployment scenarios, such as OEM distribution, please get in touch. ### What is the cost of a Lingo4G license?[](#what-is-the-cost-of-a-lingo4g-license) The cost of a license depends on the [edition](https://carrotsearch.com/lingo4g/editions/), please [contact us](mailto:info@carrotsearch.com) for a quote. ### Are there any subscription fees?[](#are-there-any-subscription-fees) No. Both one-year and perpetual server licenses are available for a one-time licensing fee. ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo4g/free-trial/). ### How many collections can I process on one server?[](#how-many-collections-can-i-process-on-one-server) There are no restrictions on the number of Lingo4G instances running on one physical or virtual server. The only limit may be the capacity of the server, including RAM size, disk space and the number of CPUs. ### Is the total number of documents in the index limited?[](#is-the-total-number-of-docs-in-the-index-limited) No. Regardless of your Lingo4G edition, there will be no license-enforced limits on the total number of documents in Lingo4G index. ### What kind of limits can my Lingo4G license include?[](#what-limits-can-my-lingo4g-license-include) Depending on your Lingo4G edition, your license file may include two limits: - **Maximum total size of indexed documents,** defined by the `max-indexed-content-length` attribute of your license file. The limit restricts the maximum total size of the text indexed for the purposes of Lingo4G analysis. Text stored in the index only for literal retrieval is not counted towards the limit. - **Maximum number of documents analyzed in one request,** defined by the `max-documents-in-scope` attribute of your license file. The limit defines the maximum size of the subset of your collection Lingo4G will analyze at a time. If the number of documents matching the subset definition query exceeds the limit, Lingo4G will ignore the lowest-scoring documents. For example, the Medium Server edition will allow you to index all 240k (spanning about 3GB) questions from SuperUser.com and will cluster or extract topics for at most 50k questions at a time. If you request processing of a subset larger than 50k questions, Lingo4G will analyze the top 50k questions matching the subset definition query. The above limits are enforced for each Lingo4G instance separately. ### I have a Lingo3G license, will I receive Lingo4G as an upgrade?[](#is-lingo4g-an-upgrade-to-lingo3g) No. Lingo3G and Lingo4G are two separate products we intend to offer and maintain independently. Lingo3G will remain an engine for real-time clustering of small and medium collections, while Lingo4G will address clustering of large data sets. Therefore, Lingo4G is not an upgrade to Lingo3G, but a complementary offering. Having said that, if you would like to switch from Lingo3G to Lingo4G, we offer a license trade-in option and count the initial Lingo3G license purchase fee towards the Lingo4G license fee. ## Evaluation ### Can I get a trial license?[](#can-i-get-a-trial-license) Absolutely! Please get in touch for a [free evaluation package](https://carrotsearch.com/lingo4g/free-trial/). ### What limitations will my trial license have?[](#what-limitations-will-my-trial-license-have) The only limitation of the evaluation license is the 2-month validity period. The license does not restrict the functionality of Lingo4G in any way. All features, tools and APIs of the Unlimited Server edition will be there for you to test. ### My trial license expired. Can I have some more time?[](#my-trial-expired-can-i-have-more-time) Absolutely, please contact us for an extension. ## Ordering ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-clustering-engine) No. Instead of refunds, we offer free of charge long-term evaluation licenses, so that you can try our software with your own data and decide if it works for you. ### Can I get a discount?[](#can-i-get-a-discount-for-a-clustering-engine) We offer discounts for purchases of larger numbers of licenses, please [get in touch](mailto:info@carrotsearch.com) for details. Alternatively, consider [Carrot2](http://project.carrot2.org), which is an open source text clustering engine. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ## Technical issues ### Can I add, update or remove documents from an existing Lingo4G index?[](#can-i-add-update-or-remove-documents) Yes. With Lingo4G version 1.7.0 or later you can [add, update](https://get.carrotsearch.com/lingo4g/latest/doc/v2/incremental-indexing/) and [delete](https://get.carrotsearch.com/lingo4g/latest/doc/v2/commands/#l4g:delete) without re-indexing the whole collection. ### Does Lingo4G come as an Elasticsearch or Solr plugin?[](#does-lingo4g-come-as-es-or-solr-plugin) No. Lingo4G is standalone software that manges its own index. The index contains Lingo4G-specific data that is not typically present in indices created by enterprise search engines. Therefore, Lingo4G will have to run in parallel to an Elasticsearch or Solr instance you might already have. As a result, the same will be stored separately in the two systems. ### Is Lingo4G an end-user product?[](#is-lingo4g-an-end-user-product) No. Lingo4G was designed as a software component rather than a complete end-user application. The primary use case for Lingo4G is integration into larger software suites. Therefore, some programming experience will be required to get started and to use Lingo4G. Having said that, Lingo4G comes with a GUI application, called Lingo4G Explorer, meant to allow rapid experiments and tuning of topic extraction and clustering. If Lingo4G Explorer meets the needs of your end users, feel free to use it. One thing to bear in mind is that our primary focus is on the underlying topic extraction and clustering algorithms, developing and extending Lingo4G Explorer is a lower priority. ### What are the system requirements for Lingo4G?[](#what-are-the-requirements-for-lingo4g) Lingo4G can run on any platform supporting Java 17 or later. While processing cannot currently be distributed to multiple machines, a high-end workstation with fast SSD storage should be capable of handling collections of several tens of gigabytes. For most data sets not exceeding gigabytes, any computer with 4GB of memory and some disk space will be sufficient. We very much recommend using SSD drives to store Lingo4G indices. Please see the [Requirements](https://get.carrotsearch.com/lingo4g/latest/doc/v2/requirements/) section of Lingo4G manual for more details. ### What does near real-time processing mean?[](#what-does-near-real-time-processing-mean) Near real-time processing means that in most cases Lingo4G will be able to extract topics for a subset of documents in your index within seconds, regardless of the size of the subset. Clustering of tens or hundreds of thousands of documents may take several minutes. To achieve near real-time performance during analysis, Lingo4G needs to index your collection first. Indexing is a one-time process where the initial text processing (tokenization, label extraction) is applied. On modern hardware, indexing speed is in the order of 200–500 MB per minute. The performance of both indexing and analysis is crucially dependent on the technology used to store Lingo4G index. To maximize performance and CPU utilization, use fast SSD drives. ### What is the largest collection Lingo4G can handle?[](#what-is-the-largest-collection-lingo4g-can-handle) On modern hardware with a high-core-count CPU and fast SSD storage, Lingo4G can handle collections reaching hundreds of gigabytes or a terabyte of text. If you'd like to test Lingo4G on such a large data set, Lingo4G comes with built-in support for indexing patent grant and application documents available from US Patent and Trademark Office. The collection is currently about 500 GB of text. One important factor to consider is that currently Lingo4G does not offer distributed processing. This means that the maximum reasonable size of the project will be limited by the amount of RAM, disk space and processing power available on a single virtual or physical server. ### Which languages does Lingo4G support?[](#what-languages-does-lingo4g-support) Currently, Lingo4G can only process English text. If you'd like to apply Lingo4G to content written in a different language, please contact us. ### Can I use the dotAtlas map visualization component in my application?[](#can-i-use-map-visualization-component-in-my-application) The dotAtlas map visualization component shipping with Lingo4G Explorer is currently pre-release software. It's been battle-tested for months by early adopters, but lacks finalized API and documentation. If you'd like to try integrating dotAtlas into your software, please let us know. We'll be happy to share the pre-release version along with code examples and initial guidance. We will not charge any extra fees for the pre-release versions of dotAtlas. Once it enters the official product suite, the use of dotAtlas will require a license fee similar to the one that applies for Carrot Search FoamTree. ## Use cases ### What are the applications of Lingo4G?[](#what-are-the-applications-of-lingo4g) The natural use case is exploration of large volumes of human-readable text, such as scientific papers, business or legal documents. You can combine Lingo4G basic text processing operations to build, for example, the following functionalities: - Recommending tags for a new document based on the tags of the documents existing in the index. - Example-based document search: finding documents similar to the example _seed_ document the user provides, based on keyword or semantic vector similarity. - 2D map visualization of documents where semantically-similar documents occupy the same area of the map. Colors of the document marker on the map indicate the cluster to which the document belongs. Salient phrases extracted from documents describe the densely-populated areas of the map. - Finding documents with highly overlapping content, which may suggest the documents are duplicates or plagiarised copies. Lingo4G can perform such a process efficiently for millions of documents at once. ### I'd like to cluster search results fetched from **public search engines**. Is Lingo4G suitable for this?[](#clustering-search-results-from-public-search-engine) No, the only engine that fits here is Lingo3G. Before clustering, Lingo4G needs to access the entire collection of documents in advance to create an index. In case of public search engines, the underlying collection is not usually available as a whole, which rules out Lingo4G[\*](#ad-hoc-processing-in-lingo4g). Lingo3G, on the other hand, was designed to cluster data in one pass — you'd simply fetch the text of search results from the search engine, feed the text to Lingo3G and receive the search results clustered. \*) One could imagine creating a temporary throwaway index just for the search results received from the search engine, which would make Lingo4G applicable as well. Currently, however, Lingo4G does not specifically support creating temporary indices, which makes the workaround cumbersome. Also, Lingo3G is optimized to perform real-time clustering of small data sets, so clustering of search results in Lingo3G will be much faster. ### I have a **fast-growing collection** of social conversations and I'd like to detect emerging topics in that data. Is Lingo4G or Lingo3G suitable for the task?[](#emerging-topic-detection-in-fast-growing-collection) While neither Lingo4G nor Lingo3G have a specific feature of emerging topic discovery, they will likely be useful components of such systems. Currently, Lingo4G's fast incremental indexing option does not discover new phrases introduced by new documents. To allow Lingo4G to pick up new phrases from newly-added conversations, features would have to be periodically re-generated based on the whole collection. This may not be a problem if it is acceptable for the new phrases to enter analysis on, for example, daily basis. If it is required for the new content to be considered immediately after it arrives, the only applicable engine is currently Lingo3G, possibly coupled with Apache Solr or Elasticsearch. ### I have a **50 GB collection of patent applications**. I want to **extract topics for up to 1000-document subsets** of that collection. Which engine is better in this case?[](#topic-extraction-on-1000-doc-subsets-of-50gb-collection) Both Lingo4G and Lingo3G are suitable in this case. Lingo4G will create an index for your collection, which will give you the ability not only to extract topics, but also to search your collection, perform conventional document clustering, produce 2d document maps and complete more advanced text mining tasks, such as classification. In case of Lingo3G, the easiest way to process your collection would be to index it in, for example, Apache Solr or Elasticsearch. Then, depending on the architecture of your software, you would either fetch documents from your search engine and feed them to Lingo3G Java/C# API for clustering, or have your search results clustered directly inside the search engine through Solr or Elasticsearch plugins. ### I have a collection of 1 million research papers and I'd like to **extract topics for up to 200k-document subsets at once**. Which engine can handle that task?[](#topic-extraction-on-200k-docs-from-1m-collection) Only Lingo4G can handle topic extraction for such large subsets of your collection. Its on-disk index makes it possible to analyze hundreds of thousands of documents within a limited memory footprint. Lingo3G with its in-memory processing model is not suitable for inputs exceeding 10 MB of text. ## Try Lingo4G for free Use fully-functional version for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo4g/free-trial/) --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # Lingo4G free trial Request trial license by e-mail, use Lingo4G free of charge for 2 months. 1. ## Request trial E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) to request your evaluation package. You will receive a fully functional 2-month Unlimited Server license file. While we get your license ready, take a look at the [Lingo4G manual](https://get.carrotsearch.com/lingo4g/latest/doc/v2/). 2. ## Download software Along with the license file you will receive download links for Lingo4G tools and APIs. The [Quick start](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start) chapter of Lingo4G manual should help you to get started. 3. ## Questions? If you have any questions or problems with Lingo4G, please do get in touch. Some more Lingo4G manual pointers you might find useful: - [Indexing JSON data](https://get.carrotsearch.com/lingo4g/latest/doc/v2/creating-a-project/) - [Indexing Word/PDF documents](https://get.carrotsearch.com/lingo4g/latest/doc/v2/indexing-text-documents/) - [REST API quick start](https://get.carrotsearch.com/lingo4g/latest/doc/v2/rest-api-v2-quick-start/) - [Analysis API overview](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis-json-overview/) - [REST API reference](https://get.carrotsearch.com/lingo4g/latest/doc/v2/rest-api-v2/) - [Analysis API reference](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis-json/) ## Ready to purchase Lingo4G? Let us know by e-mail which edition you'd like. [How to order](https://carrotsearch.com/lingo4g/how-to-order/) ## Questions & Answers ### What limitations will my trial license have?[](#what-limitations-will-my-trial-license-have) The only limitation of the evaluation license is the 2-month validity period. The license does not restrict the functionality of Lingo4G in any way. All features, tools and APIs of the Unlimited Server edition will be there for you to test. ### My trial license expired. Can I have some more time?[](#my-trial-expired-can-i-have-more-time) Absolutely, please contact us for an extension. --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # How does it work? First, let Lingo4G **index** all documents you'd like to process. Then, you can make requests to **analyze** subsets of the index to get topics and clusters. (Which is much like an enterprise search engine needs to index documents before you can search them.) You can get [started with Lingo4G](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start/) in four simple steps. 1. ## Prepare your data Convert your documents to a key-value JSON format, [write a project descriptor JSON](https://get.carrotsearch.com/lingo4g/latest/doc/v2/creating-a-project/) file to define fields in your documents. Lingo4G can also extract and [index contents of PDF, Word, HTML and plain text files](https://get.carrotsearch.com/lingo4g/latest/doc/v2/indexing-text-documents/). Alternatively, start with some built-in data sets: [Stack Exchange Q&A](https://stackexchange.com/sites) data, [PubMed Open Access](https://www.ncbi.nlm.nih.gov/pmc/tools/openftlist/) articles, [clinicaltrials.gov](https://clinicaltrials.gov) reports, [IMDb](https://imdb.com) movie descriptors, [research.gov](https://research.gov) grant descriptions, [Wikipedia](https://www.wikipedia.org/) or [US patents](https://bulkdata.uspto.gov). \[ { "id": "97", "title": "What Windows services can I safely disable?", "question": "I'm trying to improve the boot time and general performance of a Windows XP machine. Are there any services that I can safely disable?", "tag": \[ "windows", "services" \], "comments": 8, "views": 4808, "acceptedAnswer": "Black Viper maintains what is considered by many the definitive guide to Windows services. http://www.blackviper.com/​category/​guides/​service-configurations/​\\n" }, { "id": "366", "title": "How do you map a Mac keyboard to PC layout?", "question": "ay I have a Mac keyboard and want to use it on a PC. Some of the keys aren't quite right. How do I map them correctly?", ... }, { ... } ... \] 2. ## Index the data Let Lingo4G [preprocess](https://get.carrotsearch.com/lingo4g/latest/doc/v2/indexing/) the data first, much like a search engine needs to index documents before they are searchable: `$ l4g index -p your-project.json` On modern hardware indexing speed is in the order 200–2000 MB of text per minute. This video shows the process of indexing SuperUser.com questions in Lingo4G large-scale text clustering engine. 3. ## Analyze [Start the Lingo4G REST API server](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start/#starting-lingo4g-server) Lingo4G REST API server: `$ l4g server -p your-project.json` Use the Lingo4G Explorer app to [experiment](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start/#running-lingo4g-explorer) with topic extraction, clustering and 2D mapping. This video shows Lingo4G topic extraction and document clustering applied to the SuperUser.com questions and answers database. The user interface featured in this video is Lingo4G Explorer, a browser-based application that ships with Lingo4G. 4. ## Use the API Launch the [JSON Sandbox app](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis-json-sandbox-app/) to try [Lingo4G Analysis API](https://get.carrotsearch.com/lingo4g/2.1.0.rc1/doc/v2/rest-api-v2-quick-start/). Try the basic text processing building blocks, such as: - query-based document search, - salient phrase extraction, - clustering phrases into topics, - clustering and 2D-mapping of documents, - duplicate document detection. Review examples of more complex requests, such as k-nearest-neighbors classification or example-based document search. ![Lingo4G analysis API request to find more documents similar to the user-provided document.](https://carrotsearch.com/assets/carrotsearch/screenshots/lingo4g-json-sandbox-diagram.png) The screenshot shows the JSON Sandbox app, which you can use to edit, execute and tune Lingo4G analysis requests. The request shown in the screenshot finds documents that are similar to the user-provided _seed_ document. The panel on the right shows the data flow between the low-level text processing components defined by the request. ## Questions & Answers ### Is Lingo4G an end-user product?[](#is-lingo4g-an-end-user-product) No. Lingo4G was designed as a software component rather than a complete end-user application. The primary use case for Lingo4G is integration into larger software suites. Therefore, some programming experience will be required to get started and to use Lingo4G. Having said that, Lingo4G comes with a GUI application, called Lingo4G Explorer, meant to allow rapid experiments and tuning of topic extraction and clustering. If Lingo4G Explorer meets the needs of your end users, feel free to use it. One thing to bear in mind is that our primary focus is on the underlying topic extraction and clustering algorithms, developing and extending Lingo4G Explorer is a lower priority. ### What does near real-time processing mean?[](#what-does-near-real-time-processing-mean) Near real-time processing means that in most cases Lingo4G will be able to extract topics for a subset of documents in your index within seconds, regardless of the size of the subset. Clustering of tens or hundreds of thousands of documents may take several minutes. To achieve near real-time performance during analysis, Lingo4G needs to index your collection first. Indexing is a one-time process where the initial text processing (tokenization, label extraction) is applied. On modern hardware, indexing speed is in the order of 200–500 MB per minute. The performance of both indexing and analysis is crucially dependent on the technology used to store Lingo4G index. To maximize performance and CPU utilization, use fast SSD drives. ### Can I add, update or remove documents from an existing Lingo4G index?[](#can-i-add-update-or-remove-documents) Yes. With Lingo4G version 1.7.0 or later you can [add, update](https://get.carrotsearch.com/lingo4g/latest/doc/v2/incremental-indexing/) and [delete](https://get.carrotsearch.com/lingo4g/latest/doc/v2/commands/#l4g:delete) without re-indexing the whole collection. ### Does Lingo4G come as an Elasticsearch or Solr plugin?[](#does-lingo4g-come-as-es-or-solr-plugin) No. Lingo4G is standalone software that manges its own index. The index contains Lingo4G-specific data that is not typically present in indices created by enterprise search engines. Therefore, Lingo4G will have to run in parallel to an Elasticsearch or Solr instance you might already have. As a result, the same will be stored separately in the two systems. ## Technical details If you'd like to delve into technical details, Lingo4G manual has them all. - - [Architecture](https://get.carrotsearch.com/lingo4g/latest/doc/v2/architecture/) — building blocks of Lingo4G, the two-phase processing workflow. - [Indexing](https://get.carrotsearch.com/lingo4g/latest/doc/v2/indexing/) — document sources, feature and stop label extraction. - [Embeddings](https://get.carrotsearch.com/lingo4g/latest/doc/v2/learning-embeddings/) — vector representations that capture semantic relationships between words, phrases and documents. - [Analysis](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis/) — analysis scopes, labels, topics, clustering and retrieval of documents. - [Quick start](https://get.carrotsearch.com/lingo4g/latest/doc/v2/quick-start/) — detailed steps to get your first Lingo4G project based on sample data up and running. - [Requirements](https://get.carrotsearch.com/lingo4g/latest/doc/v2/requirements/) — why it is crucial to run Lingo4G on SSD drives. - [Installation](https://get.carrotsearch.com/lingo4g/latest/doc/v2/installation/) — contents of Lingo4G distribution, installation procedure. - [Indexing JSON data](https://get.carrotsearch.com/lingo4g/latest/doc/v2/creating-a-project/) — creating descriptor for your Lingo4G project, invoking indexing and analysis. - [REST API](https://get.carrotsearch.com/lingo4g/latest/doc/v2/rest-api-v2/) — calling conventions, endpoints, parameters, responses. - [Analysis API overview](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis-json-overview/) — building Lingo4G analysis pipeline specifications. - [Analysis API reference](https://get.carrotsearch.com/lingo4g/latest/doc/v2/analysis-json/) — complete reference of indexing and analysis parameters you can customize. ## Try Lingo4G for free Use fully-functional version for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo4g/free-trial/) --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # How to order Lingo4G Let us know by e-mail which edition you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The edition and the number of licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. We'll be happy to issue a temporary license to cover the payment processing period, just let us know. 3. ## Happy clustering! If you have any questions or problems with Lingo4G, please do get in touch. To receive new release notifications, sign up to Lingo4G announcements [mailing list](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Try Lingo4G for free. Evaluate fully-functional versions for 2 months free of charge. [Get a trial](https://carrotsearch.com/lingo4g/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund-for-a-clustering-engine) No. Instead of refunds, we offer free of charge long-term evaluation licenses, so that you can try our software with your own data and decide if it works for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount-for-a-clustering-engine) We offer discounts for purchases of larger numbers of licenses, please [get in touch](mailto:info@carrotsearch.com) for details. Alternatively, consider [Carrot2](http://project.carrot2.org), which is an open source text clustering engine. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- - [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) - [How it works](https://carrotsearch.com/lingo4g/how-it-works/) - [Editions](https://carrotsearch.com/lingo4g/editions/) - [Comparison](https://carrotsearch.com/lingo4g/comparison/) - [How to order](https://carrotsearch.com/lingo4g/how-to-order/) - [FAQ](https://carrotsearch.com/lingo4g/faq/) - [Free trial](https://carrotsearch.com/lingo4g/free-trial/) # Carrot Search Lingo4G License Agreement By downloading, installing, copying, saving on your computer, or otherwise using this software, you (Licensee, as defined below) are becoming a party to this Agreement and you are consenting to be bound by all the terms and conditions of this Agreement. If you do not agree to the terms and conditions of this Agreement, you should not download, install or use the software. If there is a separate agreement in force between Carrot Search and the Licensee, Licensee will not be bound by this Agreement. Upon your acceptance of this Agreement, Carrot Search grants to you a non-exclusive and non-transferable license to use Lingo4G, provided that you agree to the following: 1. **Parties** 1. _Carrot Search_ means Carrot Search s.c., located at Boznicza 11/57, 61-751 Poznan, Poland. 2. _Licensee_ means the individual or legal entity specified in the License File defined below. 2. **Definitions** 1. _Lingo4G_ means a software system for automatic clustering of textual information into hierarchical groups. Lingo4G is distributed in a binary form along with documentation. 2. _Integration Code_ means the source code provided by Carrot Search to Licensee to facilitate integration of Lingo4G with the software developed by Licensee. 3. _License File_ means electronic evidence and specification of the license granted to the Licensee by Carrot Search. A License File enables the use of Lingo4G. Only Carrot Search is permitted to produce License Files for Lingo4G. 4. _Licensing Period_ means the perpetual or limited period in which Licensee can use Lingo4G. Licensing Period is specified in the License File. 5. _Maintenance Period_ means the limited period in which Licensee is entitled to upgrade to new versions of Lingo4G and receive support. Maintenance Period is specified in the License File. 6. _Server_ means a computer controlled by Licensee which runs Lingo4G for the purposes of delivering services to end users. Identification of the Server in the License File may vary based on the characteristics of Licensee's software that uses Lingo4G. 3. **Ownership** 1. Lingo4G is the property of Carrot Search. Lingo4G is licensed, not sold. Title and copyrights to Lingo4G, in whole or in part, and all copies thereof, and all modifications, enhancements, derivatives and other alterations of Lingo4G, regardless of who made them, if any, are, and will remain, the sole and exclusive property of Carrot Search. 2. The structure, organization, and code embodied in Lingo4G, except for Integration Code, are valuable and confidential trade secrets of Carrot Search and are protected by copyright laws, intellectual property laws and treaties. Licensee agrees to abide by the copyright law and all other applicable laws. 4. **Grant of license** Subject to the terms, conditions, and limitations set forth in this Agreement, Carrot Search hereby grants to Licensee a worldwide, limited, non-exclusive, non-transferable license to use Lingo4G as follows: 1. Licensee may: 1. use Lingo4G on the Server or Servers identified in the License File for the purposes of delivering services to end users during the Licensing Period; 2. use Lingo4G on computers controlled by Licensee for the purposes of development of Licensee's software dependent on Lingo4G during the Licensing Period; 3. upgrade to any version of Lingo4G released during the Maintenance Period; 4. include Integration Code, in entirety or in parts, in the software developed by Licensee; 5. make back-up copies of Lingo4G and License File solely for archival purposes; 6. use Lingo4G during Evaluation Period, as described in Section 5, without purchasing a License File. 2. Licensee may not: 1. sell, redistribute, encumber, give, lend, rent, lease, sublicense, or otherwise transfer Lingo4G, or any portions of Lingo4G, to anyone without the prior written consent of Carrot Search; 2. reverse engineer, decompile, disassemble, modify, translate, make any attempt to discover the source code of Lingo4G, or create derivative works from Lingo4G; 3. allow the use of Lingo4G on Servers not identified in the License File; 4. disable, remove or circumvent the license terms enforcement mechanisms built into Lingo4G. Any attempt to do so will be in violation of this Agreement and will terminate Licensee's rights to use Lingo4G. 3. Carrot Search will: 1. promptly, and in any event within 72 hours, respond to e-mail requests for support that are made during mutually agreed upon business hours, taking into account time zone differences, except weekends and holidays; 2. notify Licensee of and provide any bug fix and new releases of Lingo4G; 3. provide a number of free consulting hours, specified in the License File, for integration code adjustments, performance tuning and extra documentation. Any additional technical support shall be charged at standard Carrot Search hourly rate. 5. **Restricted use during Evaluation Period** 1. Subject to the terms of this Agreement, Licensee is granted a right to use Lingo4G for evaluation purposes without charge for a period defined in the evaluation License File (_Evaluation Period_); 2. Licensee's use of Lingo4G during the Evaluation Period shall be limited to the internal evaluation of the software for the sole purpose of determining whether Lingo4G meets Licensee's requirements and whether Licensee desires to continue using Lingo4G; 3. Upon expiration of Evaluation Period, Licensee must obtain a License File to continue using Lingo4G or cease using Lingo4G immediately; 4. Upon Licensee's request, Carrot Search may, at its discretion, extend the Evaluation Period. 6. **Disclaimer of warranty** Lingo4G is provided on an "as is" without warranties of any kind, express, implied or statutory, including but not limited to, the implied warranties of title, noninfringement, merchantability and fitness for a particular purpose. 7. **Disclaimer of damages** 1. Regardless of whether any remedy set forth herein fails of its essential purpose, in no event will Carrot Search be liable to Licensee under any theory for any damages suffered by Licensee or any user of Lingo4G, or for any special, incidental, indirect, consequential, or similar damages (including without limitation, damages for loss of business profits, business interruption, loss of business information, or any other pecuniary loss) arising out of the use or inability to use Lingo4G, or the provision of or failure to provide support services, even if Carrot Search has been advised of the possibility of such damages, and regardless of the legal or equitable theory (contract, tort or otherwise) upon which the claim is based; 2. In any case, Carrot Search's entire liability under any provision of this agreement will be limited to the amount actually paid by licensee for Lingo4G. 8. **Term and Termination** This Agreement takes effect upon Licensee's acceptance of the terms of this Agreement and remains effective until terminated by either party in accordance with this Agreement. Licensee may terminate this Agreement at any time by destroying all copies of Lingo4G. This Agreement will automatically terminate if Licensee fails to comply with any term or condition of this Agreement. Upon termination of this Agreement, Licensee warrants that they will immediately destroy all copies of Lingo4G. 9. **General** 1. Unless the Licensee explicitly opts out by notifying the Carrot Search, the Licensee agrees to be identified as a customer of Carrot Search and that Carrot Search may refer to Licensee by name, trade name and trademark on Carrot Search web site and marketing materials; 2. Carrot Search reserves the right at any time to cease the support of Lingo4G and to alter prices, features, specifications, capabilities, functions, licensing terms, release dates, general availability or other characteristics of Lingo4G; 3. This Agreement, including Third Party Software license agreements, constitutes the entire agreement between the parties concerning Licensee' use of the Software, and supersedes any and all prior or contemporaneous oral or written representations, communications, or advertising with respect to the Software. No purchase order, other ordering document or any hand written or typewritten text which purports to modify or supplement the printed text of this Agreement or any schedule will add to or vary the terms of this Agreement unless signed by both Licensee and Carrot Search. 4. A waiver by either party of any term or condition of this Agreement or any breach thereof, in any one instance, will not waive such term or condition or any subsequent breach. The provisions of this Agreement which require or contemplate performance after the expiration or termination of this Agreement will be enforceable notwithstanding said expiration or termination. 5. This Agreement will be construed under the laws of the Polish trade and European Union, without regard to conflicts of laws provisions thereof. This Agreement and the performance of all obligations hereunder shall be governed according to Polish Law and the parties hereto hereby submit to the jurisdiction of the Polish Courts. All civil suits between the parties hereto shall be adjudicated by a common court with official residence in Poznan, Poland. 6. Titles are inserted for convenience only and will not affect in any way the meaning or interpretation of this Agreement. If any provision of this Agreement is held invalid, the remainder of this Agreement will continue in full force and effect. Either Licensor or Licensee may assign this Agreement in the case of a merger or sale of substantially all of its respective assets to another entity. This Agreement will be binding upon and will inure to the benefit of the parties, their successors and assigns. --- - [Support](https://carrotsearch.com/support/) - [Updates](https://carrotsearch.com/support/updates/) - [Mailing lists](https://carrotsearch.com/support/mailing-lists/) # Need help? Get in touch at [info@carrotsearch.com](mailto:info@carrotsearch.com). Technical and licensing questions, bug reports, feature suggestions, compliments — we're all ears! (Product resources linked below will offer answers to many questions and problems too!) [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) Real-time clustering of thousands of docs and megabytes of text. - [Lingo3G manual](https://get.carrotsearch.com/lingo3g/manual) — quick start tutorials, installation, integration, clustering parameters and tuning. - [Java API](https://get.carrotsearch.com/lingo3g/java/api) — JavaDoc and usage examples for Lingo3G Java API. - [C# API](https://get.carrotsearch.com/lingo3g/csharp/api) — description of Lingo3G .NET API. - [Release history](https://get.carrotsearch.com/lingo3g/manual/#section.introduction.versions) — notes for latest and previous versions of Lingo3G. [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) Clustering engine for millions of documents and gigabytes of text. - [Lingo4G reference](https://get.carrotsearch.com/lingo4g/latest/doc) — quick start tutorials, requirements, installation, conceptual overview, parameters and tuning. - [REST API](https://get.carrotsearch.com/lingo4g/latest/doc/#rest-api) — endpoints, parameters, example interactions. - [Release history](https://get.carrotsearch.com/lingo4g/latest/doc/#releases) — notes for latest and previous versions of Lingo4G. [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) Addictively interactive Voronoi treemap visualization. - [FoamTree reference](https://get.carrotsearch.com/foamtree/latest/api) — quick start, option and method reference, lots of code examples. - [Live demos](https://get.carrotsearch.com/foamtree/latest/demos) — example applications of FoamTree with complete source code. - [API recipes](http://codepen.io/collection/AzxRav/) — how to customize FoamTree using its JavaScript API, editable code on CodePen. - [Release history](https://get.carrotsearch.com/foamtree/latest/api/#releases) — notes for latest and previous versions of FoamTree. [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) Highly-interactive multi-level pie chart visualization. - [Circles reference](https://get.carrotsearch.com/circles/latest/api) — quick start, option and method reference, lots of code examples. - [Live demos](https://get.carrotsearch.com/circles/latest/demos) — example applications of Circles with complete source code. - [API recipes](http://codepen.io/collection/nLRWpZ/) — how to customize Circles using its JavaScript API, editable code on CodePen. - [Release history](http://get.carrotsearch.com/circles/latest/changes.html) — notes for latest and previous versions of Circles. ## Get the latest versions Go to the update site, upload your license file and get the latest software covered by your license. [Go to the update site https://secure.carrotsearch.com](https://secure.carrotsearch.com) --- - [Support](https://carrotsearch.com/support/) - [Updates](https://carrotsearch.com/support/updates/) - [Mailing lists](https://carrotsearch.com/support/mailing-lists/) # Stay up to date Sign up to new release announcements mailing lists. Low traffic, no spam, unsubscribe at any time. [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) New releases of Lingo3G real-time clustering engine. 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Get new release news by following us on [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) . --- - [Support](https://carrotsearch.com/support/) - [Updates](https://carrotsearch.com/support/updates/) - [Mailing lists](https://carrotsearch.com/support/mailing-lists/) # Need the latest versions? Go to the software updates sites, upload your license file and get the newest releases covered by your license. [Go to the update site https://secure.carrotsearch.com](https://secure.carrotsearch.com) [![Carrot Search software update site provides the latest versions of Carrot Search software products.](https://carrotsearch.com/assets/carrotsearch/screenshots/update-site.png)](https://secure.carrotsearch.com) Carrot Search software updates site, located at [https://secure.carrotsearch.com](https://secure.carrotsearch.com) will let you download the latest software releases covered by your license. ## Questions & Answers ### I lost my license file, what can I do?[](#i-lost-my-license-file) Please contact us at [info@carrotsearch.com](mailto:info@carrotsearch.com), we will recover your license file based on our records. ### I cannot download the latest release because my license doesn't cover it. What can I do?[](#my-license-does-not-cover-the-latest-release) Please get in touch at [info@carrotsearch.com](mailto:info@carrotsearch.com) to arrange for an extension of your software maintenance. ## Don't yet have a license? Evaluate Carrot Search software free of charge [Try for free](https://carrotsearch.com/free-trial/) [How to order](https://carrotsearch.com/how-to-order/) --- - [Contact](https://carrotsearch.com/contact/) - [Customers](https://carrotsearch.com/customers/) - [About us](https://carrotsearch.com/about-us/) Founded in 2005 by Dawid Weiss and Stanislaw Osiński, Carrot Search has been developing innovative text mining products and contributing to open source. ![Dawid Weiss](https://carrotsearch.com/assets/carrotsearch/portriaits/dawid-weiss.jpg) ## Dawid Weiss Dawid Weiss, co-founder of the Carrot2 project. For 10 years an associate professor at the Institute of Computing Science of Poznan University of Technology, Poland. Apache Lucene / Solr committer and PMC member, entrepreneur. His research and business interests include text clustering, information retrieval, machine learning, computational linguistics, programming languages and software engineering. ![Stanislaw Osinski](https://carrotsearch.com/assets/carrotsearch/portriaits/stanislaw-osinski.jpg) ## Stanisław Osiński Stanislaw Osiński, co-founder of the Carrot2 project. He received his MSc degrees from Poznan University of Technology, Poland and The University of Sheffield, United Kingdom. Apache Lucene / Solr committer. His research interests include document clustering, information retrieval, text mining, user interface design and usability. ![Gartner Cool Vendor 2015 logo](https://carrotsearch.com/assets/gartner/cool-vendor-2015.png) Carrot Search was designated a "Cool Vendor" in [Gartner's 2015 "Cool Vendors in R&D for Manufacturers" report](http://www.gartner.com/document/3025917). The Gartner Cool Vendor Logo is a trademark and service mark of Gartner, Inc., and/or its affiliates, and is used herein with permission. All rights reserved. Gartner does not endorse any vendor, product or service depicted in its research publications, and does not advise technology users to select only those vendors with the highest ratings or other designation. Gartner research publications consist of the opinions of Gartner's research organization and should not be construed as statements of fact. Gartner disclaims all warranties, expressed or implied, with respect to this research, including any warranties of merchantability or fitness for a particular purpose. --- ![Sunrise over the rooftops of Poznań, Poland, photographed by Erik Witsoe.](https://carrotsearch.com/assets/erik-witsoe/erik-witsoe-poznan-ogrodowa-sun-rise-3800.jpg) # We're located in the beautiful city of Poznań, Poland. - [Contact](https://carrotsearch.com/contact/) - [Customers](https://carrotsearch.com/customers/) - [About us](https://carrotsearch.com/about-us/) For licensing, consulting and other inquiries, get in touch at [info@carrotsearch.com](mailto:info@carrotsearch.com). ## Mailing address Carrot Search ul. Boznicza 11/57 61-751 Poznan POLAND ## Time zone When scheduling meetings, please take into account we're in the CET time zone (GMT+01). Poznań, Poland ## Payments We accept payments by international bank transfers (SWIFT, SEPA) denominated in USD or EURO. 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visualization, free trial Try the clustering engines for 2 months. Branding-locked visualizations free forever. (Trials include fully-functional software along with getting started support.) [![Lingo3G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo3g-horizontal.svg)](https://carrotsearch.com/lingo3g/) Real-time clustering of thousands of docs and megabytes of text. Try fully-functional Lingo3G Full Server edition, along with all tools and APIs for 2 months. [Free trial](https://carrotsearch.com/lingo3g/free-trial/) [![Lingo4G logo](https://carrotsearch.com/assets/carrotsearch/logos/lingo4g-horizontal.svg)](https://carrotsearch.com/lingo4g/) Clustering engine for millions of documents and gigabytes of text. Try fully-functional Lingo4G Unlimited Server edition, with all tools and APIs for two months. [Free trial](https://carrotsearch.com/lingo4g/free-trial/) [![FoamTree logo](https://carrotsearch.com/assets/carrotsearch/logos/foamtree-horizontal.svg)](https://carrotsearch.com/foamtree/) Addictively interactive Voronoi treemap visualization. Try fully-functional perpetual version of FoamTree. Trial version displays a small logo. [Free trial](https://carrotsearch.com/foamtree/free-trial/) [![Circles logo](https://carrotsearch.com/assets/carrotsearch/logos/circles-horizontal.svg)](https://carrotsearch.com/circles/) Highly-interactive multi-level pie chart visualization. Try fully-functional perpetual version of Circles. Trial version displays a small logo. [Free trial](https://carrotsearch.com/circles/free-trial/) ## Ready to purchase? E-mail us with your order. [How to order](https://carrotsearch.com/how-to-order/) --- # Ready to order? Let us know by e-mail which products you'd like. We accept payments by bank transfer. 1. ## Place your order E-mail us at [info@carrotsearch.com](mailto:info@carrotsearch.com) with the details of your order: - The products, editions and the number of licenses you'd like to purchase. - Name and address of your company or institution. - EU countries only: VAT ID of your company or institution. (A PO form is fine too.) Based on the above information we'll issue an invoice covering the license fees. 2. ## Make a payment We accept payments by bank transfer (SWIFT, SEPA). All the required details, such as our account number, will be on the invoice. Once we receive the payment or a confirmation it's been initiated, we'll e-mail you the purchased license file. We'll be happy to issue a temporary license to cover the payment processing period, just let us know. 3. ## Happy clustering! If you have any questions or problems with the software, please do get in touch. To receive new release notifications, sign up to announcements [mailing lists](https://carrotsearch.com/support/mailing-lists/) or follow our profiles: [![LinkedIn icon](https://carrotsearch.com/assets/flaticon/social/linkedin.svg)](https://www.linkedin.com/company/carrot-search) [![Twitter icon](https://carrotsearch.com/assets/flaticon/social/twitter.svg)](https://twitter.com/carrotsearch) [![Facebook icon](https://carrotsearch.com/assets/flaticon/social/facebook.svg)](http://facebook.com/carrotsearch) ## Not decided yet? Get a free trial. Use fully-functional Lingo3G and Lingo4G for 2 months. Branded visualizations free forever. [Free trial](https://carrotsearch.com/free-trial/) ## Questions & Answers ### Can I pay by credit card?[](#can-i-pay-by-credit-card) Unfortunately not. We only accept bank / wire transfers (SWIFT, SEPA). Most payments are processed within 1-2 business days. To aid the transition, we can issue a temporary license to cover the payment processing period. Additionally, we can issue the final license based on a statement confirming that the wire has been initiated. ### Can I get a refund?[](#can-i-get-a-refund) No. Instead of refunds, we offer free time-limited evaluation licenses for clustering engines and free perpetual branding-locked demo versions of visualizations. You can use them to try the products on your own data and decide if they work for you. ### Can I purchase training services?[](#can-i-purchase-training-services) Unfortunately not, we don't offer training services. Support for Carrot Search software components is based on product documentation, code examples, and direct help through e-mail and teleconferencing systems. ### Can I get a discount?[](#can-i-get-a-discount) We offer a 50% discount when visualization licenses are purchased together with a Lingo3G or Lingo4G license. The discount also applies if you already hold a valid Lingo3G or Lingo4G license and would like to purchase a FoamTree or Circles license. We also offer discounts when purchasing larger numbers of licenses, please get in touch for details. ### Can I get a formal quote?[](#can-i-get-a-formal-quote) Absolutely. Please contact us and specify the products and number of licenses to quote. ### Do you accept Purchase Orders?[](#do-you-accept-purchase-orders) Yes, feel free to submit a PO in your standard form. --- # Privacy policy This is the privacy policy is for the carrotsearch.com website operated by Carrot Search. ## Use of cookies This website does not use cookies or local browser storage. No functionality of this website requires the use of those technologies. ## Log data Like many site operators, we collect information that your browser sends whenever you visit our site (_Log data_). Log data includes browser type, browser version, the pages of our site that you visit, the time and date of your visit, address of the page that referred you to our site. We do not log the Internet Protocol (IP) address of your computer or any other personally identifiable information. ## Email addresses If you choose to subscribe to our software updates mailing lists, we will collect your email address. You can unsubscribe from the mailing lists at any time by following the instructions provided in the footer of the emails you receive. We do not sell or trade your email address to outside parties. ## Communications If you choose to subscribe to our software updates mailing lists, you will receive notifications of the new releases of our software. Messages circulated to the software updates mailing lists may contain tracking facilities within the actual email. Subscriber activity is tracked and stored in a database for future analysis and evaluation. Such tracked activity may include: the opening of emails, forwarding of emails, the clicking of links within the email content, times, dates and frequency of activity. This information is used to refine future email campaigns and supply the user with more relevant content based around their activity. ## Contact If you have questions regarding this privacy policy, please contact us. Carrot Search s.c. Bóżnicza 11/57 61-751 Poznań Poland