Yonik Seeley wrote:
On 8/8/06, Laurent Hoss wrote:
Suppose having an Index containing Lucene documents, having multiple
fields (equally) named 'paragraph'.
Now I want to make a "Field Grouping" query (described in:
http://lucene.apache.org/java/docs/queryparsersyntax.html )
"paragraph:( word1 AND word2 )"
retrieving only documents where the terms word1,word2 appear in the SAME
'paragraph' Field (and not word1 in one 'paragraph' field, and word2
possibly in another 'paragraph' field in this doc).
You could do this with the current query parser by putting large
position increment gaps between paragraphs that is guaranteed to be
larger than the largest paragraph. Then you could use a sloppy phrase
query
"word1 word2"~10000 for instance.
That would also score documents higher the closer together the words
appeared (which may or may not be desirable).
-Yonik
http://incubator.apache.org/solr Solr, the open-source Lucene search
server
We had the same idea ;)
Unfortunatelly this only makes sense for simple AND/phrase Queries, but
we also want more complex boolean queries like :
"nice cat" AND ("mouse" OR "rat" ) AND NOT ("dog")
Scoring right now doesn't interest us (!) , just whether it is a hit or
not (though I must admit it could improve the quality of our results ,
like for browsing the top xx results )
Therefor I would really like to know if the 'feature' I had in mind ,
is feasible , maybe (only) when scoring is ignored ?
(Btw, is there an option to switch off scoring ? Could that improve
performance in general?)
-Laurent
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