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?
>
