Hi,
I'm trying to boost documents using a phrase field boosting (ie the pf
parameter for edismax), but I can't get it to work (ie boosting documents where
the pf field match the query as a phrase).
As far as I can tell, solr, or more specifically the edismax handler, does
*something* when I add this parameter. I know this because the QTime increases
from around 5-10ms to around 30-40 ms, and the score explain structure is
*slightly* modified (though with the same final score for all documents). But
nowhere in the explain structure can I see anything about the pf. And I can't
understand that. Shouldn't it be included in the explain? If not, is there any
way to force it to be included somehow?
The query looks something like this:
?q=some+words&rows=10&sort=score+desc&debugQuery=true&fl=objectid,exactTitle,score%2C%5Bexplain+style%3Dtext%5D&qf=title%5E2&qf=swedishText1%5E1&defType=edismax&pf=exactTitle%5E5&wt=xml&indent=true
I have one document that has the title "some words", and when I do a simple
query filter with exactTitle:"some words" I get a match for that document. So
then I would expect that the query above would boost this document, and include
information about this in the explain. But nothing like this happens, and I
can't understand why.
The field looks like this:
<field name="exactTitle" type="keywordText" indexed="true" stored="true"
required="false" multiValued="false" />
And the fieldType looks like this:
<fieldType name="keywordText" class="solr.TextField" positionIncrementGap="100">
<analyzer>
<charFilter
class="solr.HTMLStripCharFilterFactory" />
<tokenizer
class="solr.KeywordTokenizerFactory" />
<filter
class="solr.LowerCaseFilterFactory" />
</analyzer>
</fieldType>
I have also tried boosting this document using a boost query, ie
bq=exactTitle:"some words", and this works as expected. The document score is
boosted, and the explain states this very clearly, with this segment:
[...]
9.870669 = (MATCH) weight(exactTitle:some words^5.0 in 12) [DefaultSimilarity],
result of:
[...]
Why is this working, but q=some+words&pf=exactTitle^5 not? Shouldn't edismax
rewrite my "pf query" into something very similar to the "bq query"?
Regards
/Jimi
