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org.apache.lucene.wordnet (Lucene 2.1.0 API)
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Package org.apache.lucene.wordnet
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This package uses synonyms defined by <a href="http://www.cogsci.princeton.edu/~wn/">WordNet</a> to build a Lucene index storing them, which in turn can be used for query expansion.
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<A HREF="#package_description"><B>Description</B></A>
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<TD WIDTH="15%"><B><A HREF="../../../../org/apache/lucene/wordnet/SynExpand.html" title="class in org.apache.lucene.wordnet">SynExpand</A></B></TD>
<TD>Expand a query by looking up synonyms for every term.</TD>
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<TD WIDTH="15%"><B><A HREF="../../../../org/apache/lucene/wordnet/SynLookup.html" title="class in org.apache.lucene.wordnet">SynLookup</A></B></TD>
<TD>Test program to look up synonyms.</TD>
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<TD WIDTH="15%"><B><A HREF="../../../../org/apache/lucene/wordnet/Syns2Index.html" title="class in org.apache.lucene.wordnet">Syns2Index</A></B></TD>
<TD>Convert the prolog file wn_s.pl from the <a href="http://www.cogsci.princeton.edu/2.0/WNprolog-2.0.tar.gz">WordNet prolog download</a> into a Lucene index suitable for looking up synonyms and performing query expansion (<A HREF="../../../../org/apache/lucene/wordnet/SynExpand.html#expand(java.lang.String, org.apache.lucene.search.Searcher, org.apache.lucene.analysis.Analyzer, java.lang.String, float)"><CODE>SynExpand.expand(...)</CODE></A>).</TD>
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Package org.apache.lucene.wordnet Description
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This package uses synonyms defined by <a href="http://www.cogsci.princeton.edu/~wn/">WordNet</a> to build a Lucene index storing them, which in turn can be used for query expansion. You normally run <A HREF="../../../../org/apache/lucene/wordnet/Syns2Index.html" title="class in org.apache.lucene.wordnet"><CODE>Syns2Index</CODE></A> once to build the query index/"database", and then call <A HREF="../../../../org/apache/lucene/wordnet/SynExpand.html#expand(java.lang.String, org.apache.lucene.search.Searcher, org.apache.lucene.analysis.Analyzer, java.lang.String, float)"><CODE>SynExpand.expand(...)</CODE></A> to expand a query. <p> <h3> Instructions </h3> <ol> <li> Download the <a href="http://www.cogsci.princeton.edu/2.0/WNprolog-2.0.tar.gz">WordNet prolog database</a> , gunzip, untar etc. <li> Invoke Syn2Index as appropriate to build a synonym index. It'll take 2 arguments, the path to wn_s.pl from that WordNet downlaod, and the index name. <li> Update your UI so that as appropriate you call SynExpand.expand(...) to expand user queries with synonyms. </ol>
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