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Commit Tag Bot commented on LUCENE-4628: ---------------------------------------- [trunk commit] Simon Willnauer http://svn.apache.org/viewvc?view=revision&revision=1421743 LUCENE-4628: Added CommonTermsQuery > Add common terms query to gracefully handle very high frequent terms > dynamically > -------------------------------------------------------------------------------- > > Key: LUCENE-4628 > URL: https://issues.apache.org/jira/browse/LUCENE-4628 > Project: Lucene - Core > Issue Type: Improvement > Components: modules/other > Reporter: Simon Willnauer > Assignee: Simon Willnauer > Priority: Minor > Fix For: 4.1, 5.0 > > Attachments: LUCENE-4628.patch, LUCENE-4628.patch > > > I had this problem quite a couple of times the last couple of month that > searches very often contained super high frequent terms and disjunction > queries became way too slow. The main problem was that stopword filtering > wasn't really an option since in the domain those high-freq terms where not > really stopwords though. So for instance searching for a song title "this is > it" or for a band "A" didn't really fly with stopwords. I thought about that > for a while and came up with a query based solution that decides based on a > threshold if something is considered a stopword or not and if so it moves the > term in two boolean queries one for high-frequent and one for low-frequent > such that those high frequent terms are only matched if the low-frequent > sub-query produces a match. Yet if all terms are high frequent it makes the > entire thing a Conjunction which gave me reasonable results as well as > performance. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org