On Thu, Oct 22, 2009 at 7:01 PM, Joe Calderon <calderon....@gmail.com> wrote: > hello *, i was just reading over the wiki function query page and > found this little gem for boosting recent docs thats much better than > what i was doing before > > recip(ms(NOW,mydatefield),3.16e-11,1,1)
Thanks, it's pretty new (like 2 or 3 days). Still kind of arbitrary (1 year old = 1/2 the relevance) but it seemed like a decent starting point. > my question is, at the bottom it says > The most effective way to use such a boost is to multiply it with the > relevancy score, rather than add it in. One way to do this is with the > boost query parser. > > how exactly do i use the boost query parser along with the dismax > parser? can someone post an example solrconfig snippet? See the boost link if you haven't already: http://lucene.apache.org/solr/api/org/apache/solr/search/BoostQParserPlugin.html The value of the boost ("foo" in that example) is a full sub-query... meaning you can change it's type and specify it as {!dismax qf=text pf=text}foo Or, you could set the defaultType for the subquery to dismax in the boost itself (and specify the other dismax params globally): {!boost b=... defType=dismax v=$qq} &qq=ipod &qf=text &pf=text ... See also the basic rules of LocalParams if you haven't already: http://wiki.apache.org/solr/LocalParams And the relevancy faq: http://wiki.apache.org/solr/SolrRelevancyFAQ#How_can_I_boost_the_score_of_newer_documents And here's a full URL for you to chew on: http://localhost:8983/solr/select?q={!boost b=$dateboost v=$qq defType=dismax}&dateboost=recip(ms(NOW,manufacturedate_dt),3.16e-11,1,1)&qf=text&pf=text&qq=ipod+touch&debugQuery=true -Yonik http://www.lucidimagination.com
