Thanks for your answer, I will look into this in more detail.
Paul Elschot wrote: > > On Friday 18 January 2008 17:52:27 Thibaut Britz wrote: >> >> Hi, >> > ... >> >> Another thing I noticed is that we append a lot of queries, so we have a >> lot >> of duplicate phrases like (A and B or C) and ... and (A and B or C) (more >> nested than that). Is lucene doing any internal query optimization (like >> karnaugh maps) by removing the last (A and B or C), as it is not needed, >> or >> do I have to do that myself? > > Query optimization like karnaugh maps is not available in Lucene. > For each level of 'and' and 'or' in the (rewritten) query, as well as for > all terms > in the query, a separate scorer will be used during query search. > > The query rewrite could in principle do this, but it might affect the > score values. > > Regards, > Paul Elschot > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/Lucene-Performance-tp14952958p15132031.html Sent from the Lucene - Java Users mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
