Is my reading correct that the boost is only applied on "china" but not "snowden"? How can that be?
My query is: q=china+snowden&qf=title^10 content On Mon, Jul 22, 2013 at 9:43 PM, Joe Zhang <smartag...@gmail.com> wrote: > Thanks for your hint, Jack. Here is the debug results, which I'm having a > hard deciphering (the two terms are "china" and "snowden")... > > 0.26839527 = (MATCH) sum of: > 0.26839527 = (MATCH) sum of: > 0.26757246 = (MATCH) max of: > 7.9147343E-4 = (MATCH) weight(content:china in 249), product of: > 0.019873314 = queryWeight(content:china), product of: > 1.6649085 = idf(docFreq=46832, maxDocs=91058) > 0.01193658 = queryNorm > 0.039825942 = (MATCH) fieldWeight(content:china in 249), product > of: > 4.8989797 = tf(termFreq(content:china)=24) > 1.6649085 = idf(docFreq=46832, maxDocs=91058) > 0.0048828125 = fieldNorm(field=content, doc=249) > 0.26757246 = (MATCH) weight(title:china^10.0 in 249), product of: > 0.5836803 = queryWeight(title:china^10.0), product of: > 10.0 = boost > 4.8898454 = idf(docFreq=1861, maxDocs=91058) > 0.01193658 = queryNorm > 0.45842302 = (MATCH) fieldWeight(title:china in 249), product of: > 1.0 = tf(termFreq(title:china)=1) > 4.8898454 = idf(docFreq=1861, maxDocs=91058) > 0.09375 = fieldNorm(field=title, doc=249) > 8.2282536E-4 = (MATCH) max of: > 8.2282536E-4 = (MATCH) weight(content:snowden in 249), product of: > 0.03407834 = queryWeight(content:snowden), product of: > 2.8549502 = idf(docFreq=14246, maxDocs=91058) > 0.01193658 = queryNorm > 0.024145111 = (MATCH) fieldWeight(content:snowden in 249), product > of: > 1.7320508 = tf(termFreq(content:snowden)=3) > 2.8549502 = idf(docFreq=14246, maxDocs=91058) > 0.0048828125 = fieldNorm(field=content, doc=249) > > > On Mon, Jul 22, 2013 at 9:27 PM, Jack Krupansky > <j...@basetechnology.com>wrote: > >> Maybe you're not doing anything wrong - other than having an artificial >> expectation of what the true relevance of your data actually is. Many >> factors go into relevance scoring. You need to look at all aspects of your >> data. >> >> Maybe your terms don't occur in your titles the way you think they do. >> >> Maybe you need a boost of 500 or more... >> >> Lots of potential maybes. >> >> Relevancy tuning is an art and craft, hardly a science. >> >> Step one: Know your data, inside and out. >> >> Use the debugQuery=true parameter on your queries and see how much of the >> score is dominated by your query terms in the non-title fields. >> >> -- Jack Krupansky >> >> -----Original Message----- From: Joe Zhang >> Sent: Monday, July 22, 2013 11:06 PM >> To: solr-user@lucene.apache.org >> Subject: Question about field boost >> >> >> Dear Solr experts: >> >> Here is my query: >> >> defType=dismax&q=term1+term2&**qf=title^100 content >> >> Apparently (at least I thought) my intention is to boost the title field. >> While I'm getting some non-trivial results, I'm surprised that the >> documents with both term1 and term2 in title (I know such docs do exist in >> my repository) were not returned (or maybe ranked very low). The situation >> does not change even when I use much larger boost factors. >> >> What am I doing wrong? >> > >
