Perhaps a ps2 parameter to match pf2? -Yonik http://www.lucidimagination.com
On Fri, Aug 13, 2010 at 2:11 PM, Ron Mayer <r...@0ape.com> wrote: > Jayendra Patil wrote: >> We pretty much had the same issue, ended up customizing the ExtendedDismax >> code. >> >> In your case its just a change of a single line >> addShingledPhraseQueries(query, normalClauses, phraseFields2, 2, >> tiebreaker, pslop); >> to >> addShingledPhraseQueries(query, normalClauses, phraseFields2, 2, >> tiebreaker, 0); > > Thanks!!! Indeed it seems to be providing better results for me (at first > glance on a test system). > > Is there any way of lobbying to make this change in the official releases? > > >> On Thu, Aug 12, 2010 at 1:04 PM, Ron Mayer <r...@0ape.com> wrote: >>> Short summary: >>> >>> Is there any way I can specify that I want a lot >>> of phrase slop for the "pf" parameter, but none >>> at all for the "pf2" parameter? >>> >>> I find the 'pf' parameter with a pretty large 'ps' to do a very >>> nice job for providing a modest boost to many documents that are >>> quite well related to many queries in my system. >>> >>> In contrast, I find the 'pf2' parameter with zero 'ps' does >>> extremely well at providing a high boost to documents that >>> are often exactly what someone's searching for. >>> >>> Is there any way I can get both effects? >>> >>> Edismax's pf2 parameter is really nice for boosting exact [sub]phrases >>> in queries like 'black jacket red cap white shoes'. But as soon >>> as even a little phrase slop (ps) is added, it seems like it starts >>> boosting documents with red jackets and white caps just as much as >>> those with black jackets and red caps. >>> >>> My gut feeling is that if I could have "pf" with a large phrase >>> slop and the pf2 with zero phrase slop, it'd give me better overall >>> results than any single phrase slop setting that gets applied to both. >>> >>> Is there any good way for me to test that? >>> >>> Thanks, >>> Ron >>> >>> >> > >
