It would be a good feature in Lucene to be able to sort, or perhaps store the postings in term frequency sorted order. Thoughts?
On Wed, Sep 17, 2008 at 9:33 AM, Andrzej Bialecki <[EMAIL PROTECTED]> wrote: > Renaud Delbru wrote: >> >> Hi all, >> >> I am wondering if Lucene implements the query optimisation that consists >> of ordering the posting lists based on the term frequency before >> intersection ? >> If yes, could somebody point me to the java class / method that implements >> such strategy ? > > Lucene trunk: ConjunctionScorer, lines 85-103 - pay attention to the > comments there, it's not strictly a sort by frequency, rather by the sampled > "sparseness". > > -- > 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: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
