| Convert the prolog file wn_s.pl from the WordNet prolog download
into a Lucene index suitable for looking up synonyms and performing query expansion (
SynExpand.expand SynExpand.expand(...) ).
This has been tested with WordNet 2.0.
The index has fields named "word" (
Syns2Index.F_WORD )
and "syn" (
Syns2Index.F_SYN ).
The source word (such as 'big') can be looked up in the
"word" field, and if present there will be fields named "syn"
for every synonym. What's tricky here is that there could be multiple
fields with the same name, in the general case for words that have multiple synonyms.
That's not a problem with Lucene, you just use
org.apache.lucene.document.Document.getValues
While the WordNet file distinguishes groups of synonyms with
related meanings we don't do that here.
This can take 4 minutes to execute and build an index on a "fast" system and the index takes up almost 3 MB.
author:
Dave Spencer, dave@searchmorph.com
See Also: WordNet home page
See Also: prologdb man page
See Also: sample site that uses it |
