Thanks Ian and Andrzej. You solved a mystery for us. -- Yuval ________________________________________ From: Andrzej Bialecki [...@getopt.org] Sent: Thursday, February 11, 2010 6:53 PM To: java-user@lucene.apache.org Subject: Re: Do deleted documents affect scores?
On 2010-02-11 17:35, Ian Lea wrote: > I'm pretty sure that the answer is no and a quick test on a small > index with/without deleted docs showed no difference in the scores, > using 3.0. But that was hardly a rigorous test and I don't know > enough about lucene internals and scoring to give a definitive answer. > > Shouldn't be too hard for you to verify or disprove: build an index > and throw loads of updates and deletes at it, checking scores as you > go. Actually, deleted docs do affect scoring for a time - IDF of a term is not updated until you optimize (or when Lucene decides to merge segments). -- Best regards, Andrzej Bialecki <>< ___. ___ ___ ___ _ _ __________________________________ [__ || __|__/|__||\/| Information Retrieval, Semantic Web ___|||__|| \| || | Embedded Unix, System Integration http://www.sigram.com Contact: info at sigram dot com --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
