RE: FW: Score customization
I effectively need to use a multiplication in the sorting of the items. Something like score*popularity. It seems the only way to do this is to use a bf parameter. However how do you use bf in combination with the standard requestHandler? hossman wrote: : Now I need to know whether the FunctionQuery result is considered during : the results sorting. That is, are search results sorted according to the : sum of the similarity and the FunctionQuery value or according to : similarity only? a function query in a larger query contributes to the score just like any other clause ... if you sort by score, you are sorting by the *whole* score ... if you sort by some other field then the *whole* score is irrelevant. -Hoss -- View this message in context: http://www.nabble.com/Score-customization-tp13404845p20458084.html Sent from the Solr - User mailing list archive at Nabble.com.
RE: FW: Score customization
You could use function query with standardRequestHandler to influence the final score and sort result by score. If you want to control how much the function query would affect the original score, you could use the linear function. -Original Message- From: lajkonik86 [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 12, 2008 2:55 Joe To: solr-user@lucene.apache.org Subject: RE: FW: Score customization I effectively need to use a multiplication in the sorting of the items. Something like score*popularity. It seems the only way to do this is to use a bf parameter. However how do you use bf in combination with the standard requestHandler? hossman wrote: : Now I need to know whether the FunctionQuery result is considered during : the results sorting. That is, are search results sorted according to the : sum of the similarity and the FunctionQuery value or according to : similarity only? a function query in a larger query contributes to the score just like any other clause ... if you sort by score, you are sorting by the *whole* score ... if you sort by some other field then the *whole* score is irrelevant. -Hoss -- View this message in context: http://www.nabble.com/Score-customization-tp13404845p20458084.html Sent from the Solr - User mailing list archive at Nabble.com.
RE: FW: Score customization
: I effectively need to use a multiplication in the sorting of the items. : Something like score*popularity. : It seems the only way to do this is to use a bf parameter. : However how do you use bf in combination with the standard requestHandler? functions are understood by the standard query parser using the _val_:func(...) hack... http://wiki.apache.org/solr/SolrQuerySyntax -Hoss
RE: FW: Score customization
I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
Re: FW: Score customization
On 11/3/07, Victoria Kaganski [EMAIL PROTECTED] wrote: I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? Only for the FunctionQuery part... it's not an all or nothing thing. Let me give you a specific example in Solr Query syntax: +text:spider man~100 _val_:popularity This query will result in the full-text relevance score (yes, using similarity) of the first part added to the value of the popularity field. Try some examples out and let us know if you don't get what you expect. -Yonik From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
RE: FW: Score customization
Oh, I finally understand. Now I need to know whether the FunctionQuery result is considered during the results sorting. That is, are search results sorted according to the sum of the similarity and the FunctionQuery value or according to similarity only? From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Sat 11/3/2007 11:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 11/3/07, Victoria Kaganski [EMAIL PROTECTED] wrote: I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? Only for the FunctionQuery part... it's not an all or nothing thing. Let me give you a specific example in Solr Query syntax: +text:spider man~100 _val_:popularity This query will result in the full-text relevance score (yes, using similarity) of the first part added to the value of the popularity field. Try some examples out and let us know if you don't get what you expect. -Yonik From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
RE: FW: Score customization
: Now I need to know whether the FunctionQuery result is considered during : the results sorting. That is, are search results sorted according to the : sum of the similarity and the FunctionQuery value or according to : similarity only? a function query in a larger query contributes to the score just like any other clause ... if you sort by score, you are sorting by the *whole* score ... if you sort by some other field then the *whole* score is irrelevant. -Hoss
Re: FW: Score customization
On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
