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Posted to solr-user@lucene.apache.org by Peter Dodd <pd...@microsoft.com> on 2014/02/20 20:20:08 UTC

Can set a boost function as a default within requesthandler?

For my search I’ve established a boost function which enhances result
ranking. In a query it looks something like: 

   q={!boost b=product(answeredStatus, articleType)}connectivity

I’d like to make this boost function a default for all others who use the
search. My default search handler is configured like this in solrConfig.xml:

<requestHandler class="solr.SearchHandler" name="standard" default="true">
 <lst name="defaults">
  <str name="echoParams">explicit</str>
  <str name="fl">*,score</str>
 </lst>
 <arr name="components">
  <str>collapse</str>
  <str>facet</str>
  <str>mlt</str>
  <str>highlight</str>
  <str>stats</str>
  <str>debug</str>
 </arr>
</requestHandler>

Can I add the boost function as a default in here?

Many  thanks,
Peter




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Re: Can set a boost function as a default within requesthandler?

Posted by Ahmet Arslan <io...@yahoo.com>.

Hi Peter,

According to 

http://wiki.apache.org/solr/LocalParams#Parameter_dereferencing

if
    q={!dismax qf=myfield}solr rocks 

is equivalent to

    q={!type=dismax qf=myfield v=$qq}&qq=solr rocks
    
then
      q={!boost b=product(answeredStatus, articleType)}connectivity
      
is equivalent to

      q={!type=boost b=product(answeredStatus, articleType) v=$qq}&qq=connectivity
    
Then you can define q in defaults section of request handler in solrconfig.xml then pass qq parameter in request.

Ahmet





On Thursday, February 20, 2014 9:32 PM, Peter Dodd <pd...@microsoft.com> wrote:
For my search I’ve established a boost function which enhances result
ranking. In a query it looks something like: 

   q={!boost b=product(answeredStatus, articleType)}connectivity

I’d like to make this boost function a default for all others who use the
search. My default search handler is configured like this in solrConfig.xml:

<requestHandler class="solr.SearchHandler" name="standard" default="true">
<lst name="defaults">
  <str name="echoParams">explicit</str>
  <str name="fl">*,score</str>
</lst>
<arr name="components">
  <str>collapse</str>
  <str>facet</str>
  <str>mlt</str>
  <str>highlight</str>
  <str>stats</str>
  <str>debug</str>
</arr>
</requestHandler>

Can I add the boost function as a default in here?

Many  thanks,
Peter




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Re: Re: Can set a boost function as a default within requesthandler?

Posted by Ahmet Arslan <io...@yahoo.com>.

Hi Peter,

Yes you are correct. Send qq=connectivity with the following defaults section

<lst name="defaults">
  <str name="echoParams">explicit</str>
  <str name="fl">*,score</str>
  <str name="q">{!type=boost b=product(answeredStatus, articleType) v=$qq}</str>  
</lst>

Alternatively, you can switch to edismax query parser. It has native/built in boost and bf parameters. Former is multiplicative boost, latter is additive boost.

Ahmet 



On Friday, February 21, 2014 3:36 AM, Peter Dodd <pd...@microsoft.com> wrote:
So I'd need to change the query syntax to load and pass *qq
*(qq=connectivity) instead of *q* (q=connectivity) ?



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Re: Re: Can set a boost function as a default within requesthandler?

Posted by Peter Dodd <pd...@microsoft.com>.

So I'd need to change the query syntax to load and pass *qq
*(qq=connectivity) instead of *q* (q=connectivity) ?



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View this message in context: http://lucene.472066.n3.nabble.com/Can-set-a-boost-function-as-a-default-within-requesthandler-tp4118647p4118703.html
Sent from the Solr - User mailing list archive at Nabble.com.