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From "Jack Krupansky" <j...@basetechnology.com>
Subject Re: Question about field boost
Date Tue, 23 Jul 2013 04:27:28 GMT
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? 


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