WordNet::Similarity

This is a Perl module that implements a variety of semantic similarity and relatedness measures based on information found in the lexical database WordNet. In particular, it supports the measures of Resnik, Lin, Jiang-Conrath, Leacock-Chodorow, Hirst-St.Onge, Wu-Palmer, Banerjee-Pedersen, and Patwardhan-Pedersen.

We have a mailing list designed to support users of WordNet::Similarity.

Want to report a bug or request a feature? Do that here!

Download the Current Version (v2.07, released October 4, 2015) from CPAN or Sourceforge

Documentation
See the README and CHANGES files, as well as our TODO list.
This diagram shows the major modules and functions of WordNet::Similarity as of version 0.13. (**still CURRENT as of v2.07**)
Browse the current CVS version.
Pre-computed Pairwise Similarity Values for Nouns and Verbs
We are pre-computing all pairwise similarity values for all senses in WordNet, slowly but surely. This began in June 2010 - by March 2011 we had completed all verb pairs for all similarity measures, and in August 2011 we completed all noun pairs for the path measure. We continue to work on the other measures.
- WordNet Similarity Pairs
Information Content Computed on Various Corpora
We have pre-computed information content files from the British National Corpus (World Edition), the Penn Treebank (version 2), the Brown Corpus, the complete works of Shakespeare, and SemCor (with and without sense tags). These were created using the *Freq.pl programs found in WordNet::Similarity. These information content files should be used with WordNet::Similarity for the given version of WordNet.

Version Dependencies of WordNet::Similarity

Please note version numbers, they must be exactly as shown.

WordNet::Similarity (version 2.01) and above supports WordNet 3.0.
- WordNet (version 3.0)
- WordNet::QueryData (version 1.46 or better)
- Text-Similarity (version 0.02 or better)
WordNet::Similarity (version 1.04) supports WordNet 2.1
- WordNet (version 2.1)
- WordNet::QueryData (version 1.45)
WordNet::Similarity (version 0.16) supports WordNet 2.0
- WordNet (version 2.0)
- WordNet::QueryData (version 1.38)
WordNet::Similarity (version 0.05) supports WordNet 1.6, 1.7 and 1.7.1
- WordNet (version 1.6) or WordNet (version 1.7) or WordNet (version 1.7.1)
- WordNet::QueryData (version 1.26)
We don't know if WordNet::Similarity supports WordNet version 1.5

Bibliography (papers by users of WordNet::Similarity)

Publications (our papers about WordNet::Similarity)