Hello, Yonik. >> ok. I have big issue when I try to search ParallelMultiSearcher for >> PrefixQuery. This query is being rewritten to BooleanQuery during >> search. This causes Similarity to calculate docFreq for each Term in the >> BooleanQuery. So if we have a lot of results for some PrefixQuery then >> we have a lot of calls to docFreq method of Searchable object passed >> to ParallelMultiSearcher.
YS> IDF often does not make sense for auto-expanding queries (range, prefix, etc). YS> If you don't need the idf factor that makes rarer terms count more, YS> then use a PrefixFilter wrapped in a ConstantScoreQuery. YS> http://lucene.apache.org/java/docs/api/org/apache/lucene/search/ConstantScoreQuery.html YS> http://incubator.apache.org/solr/docs/api/org/apache/solr/search/PrefixFilter.html Thank you so much! PrefixFilter has eliminated counting idf's.. I wonder why it is not inside of Lucene yet :) -- Yura Smolsky, http://altervisionmedia.com/ --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
