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Release 3.0

Carrot2 Project......
Carrot2: open source framework for building search clustering engines
After 12 months of hard work, we are proud to announce the release 3.0 of Carrot2. The 3.0 release introduces significant improvements in all areas of the framework:
Simplified Java APIDownload With new adopters in mind, the 3.0 release significantly simplifies the Java API of Carrot2. Three statements are enough to get started:
Map<String, Object> attributes = 
    new HashMap<String, Object>();
attributes.put(AttributeNames.QUERY, "cluster me");

List<Cluster> clusters = new SimpleController()
  .process(attributes, YahooDocumentSource.class, 
Contrary to the 2.x line, the 3.0 release requires Java JDK 1.5 or higher.
Improved clustering quality Carrot2's default clustering algorithm, Lingo, has been re-implemented for improved clustering quality and extensibility. For both Lingo and STC algorithms, we have exposed a significant number of attributes that will allow you to fine-tune them for your needs.
Brand new Carrot2 Document Clustering WorkbenchDownload The 3.0 release introduces a brand new GUI application for experimenting and tuning Carrot2 clustering. Carrot2 Clustering Workbench You can use Carrot2 Document Clustering Workbench to quickly start clustering your own data or to tune clustering results.
Brand new Carrot2 Web ApplicationView onlineCarrot2 Web Application has been reimplemented for easier customization and top front-end performance. We also included an attractive visualization. Carrot2 Web Application, cluster tree viewCarrot2 Web Application, visualization view
Improved Carrot2 Document Clustering ServerDownload The 3.0 release improves the Document Clustering Server by adding the ability to query external document sources. It also adds a simple web-based quick start screen. Carrot2 Document Clustering Workbench You can use Carrot2 Document Clustering Server to integrate Carrot2 with your non-Java software.
User and Developer ManualView onlineCarrot2 now comes with an initial version of the user and developer manual. We will be extending the manual based on the frequency of questions on the mailing list. Carrot2 User and Developer Manual

If you have concerns about choosing between the 2.x and 3.0 versions or migrating from 2.x to 3.0, please see the release 3.0 Frequently Asked Questions.