EXtended WordNet


The eXtended WordNet is a project at the University of Texas at Dallas that aims to improve WordNet by semantically parsing the glosses, thus making the information contained in these definitions available for automatic knowledge processing systems. It is freely available under a BSD style license. Although it has not been updated since November 2004, it still remains a useful resource.

Database format

The database is available as a set of four XML files - one each for verbs, adverbs, nouns and adjectives. The following information is extracted from the glosses:
As an example, the following information is available for the synset excellent, first-class, fantabulous:
Gloss:
of the highest quality
Word sense disambiguation:

of
the
highest
quality

Parse tree:


) ) )
)
Logic form:
excellent:JJ -> of:IN highest:JJ quality:NN

Data quality

Each gloss is first tagged using Brill's tagger. The glosses are then parsed using both Charniak's parser and an in-house Collins' style parser. Each parsed gloss is then assigned a level of quality: