synexpand.html

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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Test driver for synonym expansion.</TD>
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<A NAME="SynExpand()"><!-- --></A><H3>
SynExpand</H3>
<PRE>
public <B>SynExpand</B>()</PRE>
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<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
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public static void <B>main</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>[]&nbsp;args)
                 throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
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<DD>Test driver for synonym expansion.
 Uses boost factor of 0.9 for illustrative purposes.

 If you pass in the query "big dog" then it prints out:

 <code><pre>
 Query: big adult^0.9 bad^0.9 bighearted^0.9 boastful^0.9 boastfully^0.9 bounteous^0.9 bountiful^0.9 braggy^0.9 crowing^0.9 freehanded^0.9 giving^0.9 grown^0.9 grownup^0.9 handsome^0.9 large^0.9 liberal^0.9 magnanimous^0.9 momentous^0.9 openhanded^0.9 prominent^0.9 swelled^0.9 vainglorious^0.9 vauntingly^0.9
 dog andiron^0.9 blackguard^0.9 bounder^0.9 cad^0.9 chase^0.9 click^0.9 detent^0.9 dogtooth^0.9 firedog^0.9 frank^0.9 frankfurter^0.9 frump^0.9 heel^0.9 hotdog^0.9 hound^0.9 pawl^0.9 tag^0.9 tail^0.9 track^0.9 trail^0.9 weenie^0.9 wiener^0.9 wienerwurst^0.9
 </pre></code>
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<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
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<A NAME="expand(java.lang.String, org.apache.lucene.search.Searcher, org.apache.lucene.analysis.Analyzer, java.lang.String, float)"><!-- --></A><H3>
expand</H3>
<PRE>
public static <A HREF="../../../../org/apache/lucene/search/Query.html" title="class in org.apache.lucene.search">Query</A> <B>expand</B>(<A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;query,
                           <A HREF="../../../../org/apache/lucene/search/Searcher.html" title="class in org.apache.lucene.search">Searcher</A>&nbsp;syns,
                           <A HREF="../../../../org/apache/lucene/analysis/Analyzer.html" title="class in org.apache.lucene.analysis">Analyzer</A>&nbsp;a,
                           <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/lang/String.html" title="class or interface in java.lang">String</A>&nbsp;field,
                           float&nbsp;boost)
                    throws <A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></PRE>
<DL>
<DD>Perform synonym expansion on a query.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>query</CODE> - users query that is assumed to not have any "special" query syntax, thus it should be just normal words, so "big dog" makes sense, but a query like "title:foo^1.2" doesn't as this should presumably be passed directly to the default query parser.<DD><CODE>syns</CODE> - a opened to the Lucene index you previously created with <A HREF="../../../../org/apache/lucene/wordnet/Syns2Index.html" title="class in org.apache.lucene.wordnet"><CODE>Syns2Index</CODE></A>. The searcher is not closed or otherwise altered.<DD><CODE>a</CODE> - optional analyzer used to parse the users query else <A HREF="../../../../org/apache/lucene/analysis/standard/StandardAnalyzer.html" title="class in org.apache.lucene.analysis.standard"><CODE>StandardAnalyzer</CODE></A> is used<DD><CODE>field</CODE> - optional field name to search in or null if you want the default of "contents"<DD><CODE>boost</CODE> - optional boost applied to synonyms else no boost is applied
<DT><B>Returns:</B><DD>the expanded Query
<DT><B>Throws:</B>
<DD><CODE><A HREF="http://java.sun.com/j2se/1.4/docs/api/java/io/IOException.html" title="class or interface in java.io">IOException</A></CODE></DL>
</DD>
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