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Posted to java-user@lucene.apache.org by Sven Duzont <sv...@keljob.com> on 2005/04/27 13:51:25 UTC
Re[2]: multi word synonym (was Hungarian notation analyzer and phrase queries)
Hello,
What about the solution to index every multi-word synonym as a single
token ?
Example :
Phrase to index : "i love jsp and tomcat"
Synonyms : "jsp" = "java server pages" = "javaserver pages"
Tokens : i love jsp and tomcat
java server pages
javaserver pages
Position : 0 1 2 3 4
This solution will have the advantage to solve the phrase query problems.
One will have also to rewrite queries before parsing it with the
QueryParser. for instance the query (tomcat jsp) will be rewrited as
(tomcat (jsp OR "java server pages" OR "javaserver pages"))
Any thoughts ?
Thanks in advance
---
Sven
mercredi 13 avril 2005, 19:36:44, vous avez écrit:
CH> : Another approach would be to index this as:
CH> :
CH> : token: use power query for advanced searches
CH> : powerquery
CH> : position: 0 1 2 3 4 5
CH> :
CH> : Then use phrase queries with slop=1, to permit a one-token gap when
CH> : someone searches for "use powerquery for advanced searches".
CH> right, but in your example "1" is a magic number that works because we are
CH> only dealing with "multi-word synonyms" of 2 words. in general, this
CH> approach requires that you pick some some N such that you are garunteed no
CH> synonym contains more then N-1 words, and set the token positions to...
CH> token: use powerquery for advanced searches
CH> power query
CH> position: 0 N N+1 2N 3N 4N
CH> -Hoss
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