Blog on the RankQuery API http://heliosearch.org/solrs-new-rankquery-feature/
Joel Bernstein Search Engineer at Heliosearch On Wed, Jul 23, 2014 at 3:27 PM, Joel Bernstein <joels...@gmail.com> wrote: > The ReRankingQParserPlugin uses the Lucene QueryRescorer, which only uses > the score from the re-rank query when re-ranking the top N documents. > > The ReRanklingQParserPlugin is built as a RankQuery plugin so you can swap > in your own implementation. Patches are also welcome for the existing > implementation. > > Joel Bernstein > Search Engineer at Heliosearch > > > On Wed, Jul 23, 2014 at 11:37 AM, Peter Keegan <peterlkee...@gmail.com> > wrote: > >> See http://heliosearch.org/solrs-new-re-ranking-feature/ >> >> >> On Wed, Jul 23, 2014 at 11:27 AM, Erick Erickson <erickerick...@gmail.com >> > >> wrote: >> >> > I'm having a little trouble understanding the use-case here. Why use >> > re-ranking? >> > Isn't this just combining the original query with the second query with >> an >> > AND >> > and using the original sort? >> > >> > At the end, you have your original list in it's original order, with >> > (potentially) some >> > documents removed that don't satisfy the secondary query. >> > >> > Or I'm missing the boat entirely. >> > >> > Best, >> > Erick >> > >> > >> > On Wed, Jul 23, 2014 at 6:31 AM, Peter Keegan <peterlkee...@gmail.com> >> > wrote: >> > >> > > I'm looking at how 'ReRankQuery' works. If the main query has a Sort >> > > criteria, it is only used to sort the first pass results. The >> QueryScorer >> > > used in the second pass only reorders the ScoreDocs based on score and >> > > docid, but doesn't use the original Sort fields. If the Sort criteria >> is >> > > 'score desc, myfield asc', I would expect 'myfield' to break score >> ties >> > > from the second pass after rescoring. >> > > >> > > Is this a bug or the intended behavior? >> > > >> > > Thanks, >> > > Peter >> > > >> > >> > >
