[Previous: Overview] [Contents] [Next: Installing and Running Terrier]

What's New in Terrier

Terrier 3.5 - 16/06/2011

Significant update: Added Document-at-a-time (DAAT) retrieval for large indices; Refactored tokenisation for enhanced multi-language support; Upgraded Hadoop support to version 0.20 (NB: Terrier now requires Java 1.6); Added synonym support in query language and retrieval; Added out-of-the-box support for query-biased summaries and improved example web-based interface; Added new, 2nd generation DFR models as well as other recent effective information-theoretic models; Included many more JUnit tests (now 300+). Terrier 3.0 indices are compatible with Terrier 3.5.

Indexing

Retrieval

Testing

Desktop

Other

Terrier 3.0 - 10/03/2010

Major update: Support for indexing WARC collections; improved index structure layout; improved MapReduce mode indexing; refined, scalable structure access at retrieval time; moved all code to terrier.org namespace; added field-based and proximity term dependence models; added HTTP-based retrieval interface; added many JUnit tests. All indices must be rebuilt.

Indexing

Retrieval

Testing

Desktop

Other

Terrier 2.2.1 - 29/01/2009

Minor update - fixes some small bugs in 2.2 relating to MapReduce mode indexing, clarifies some documentation, and includes a missing source file.

Terrier 2.2 - 23/12/2008

Substantial update, consisting of new support for Hadoop, a Hadoop MapReduce indexing system, and various minor improvements and bug fixes. This is intended to be the ultimate release in the 2.x series.

Indexing

Retrieval

Other

Terrier 2.1 - 19/03/2008

Minor update, containing mostly bug fixes, and a FileSystem abstraction layer.

Indexing

Retrieval

Desktop

Testing

Other

Terrier 2.0 - 04/01/2008

Major update, integrating a new (alternative) single-pass indexing architecture, and a new index format. Some bug fixes and some change of APIs.

Indexing

Retrieval

Desktop

Testing

Other

Terrier 1.1.1 - 24/10/2007

Minor update. Mostly bug fixes. Some minor code enhancements, plus the inclusion of a test harness. Snowball stemmers were added to boost support for languages other than English. This will likely be the last release in the 1.x.x series.

Indexing

Retrieval

Desktop

Other

Terrier 1.1.0 - 15/06/2007

Major update. Many changes to the source code, including more robust indexing and index structure merging.

Indexing

Indexing architecture has been updated for Terrier 1.1.0, however indices created with 1.1.0 are completely compatible with those created with 1.0.x, and vice-versa.

Retrieval

Other

Terrier 1.0.2 - 17/03/2005

Terrier 1.0.1 - 09/02/2005

Terrier 1.0.0 - 28/01/2005

Terrier 1.0 Beta2 - 22/11/2004

Terrier 1.0 Beta - 18/11/2004

[Previous: Overview] [Contents] [Next: Installing and Running Terrier]