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https://issues.apache.org/jira/browse/SOLR-16643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Webb updated SOLR-16643:
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Description:
I noticed the ReRank query parser adds the score from the {{reRankQuery}} to
the original score. This means that existing edismax {{boost}} functions can't
easily be migrated to use reranking instead, and reranking functions have the
same issue as is noted at
https://solr.apache.org/guide/solr/latest/query-guide/dismax-query-parser.html#bq-bf-shortcomings.
In https://github.com/apache/solr/pull/1324 I've added a
{{reRankOperator=multiply}} option to the ReRank parser which enables reranking
functions to multiply the score instead.
Is this a good thing to do, or have I missed a reason why only additive boosts
should be available?
was:
I noticed the ReRank query parser adds the score from the {{reRankQuery}} to
the original score. This means that existing edismax {{boost}} functions can't
easily be migrated to use reranking instead, and reranking functions have the
same issue as is noted at
https://solr.apache.org/guide/solr/latest/query-guide/dismax-query-parser.html#bq-bf-shortcomings.
In this PR (link coming shortly!) I've added a {{reRankOperator=multiply}}
option to the ReRank parser which enables reranking functions to multiply the
score instead.
Is this a good thing to do, or have I missed a reason why only additive boosts
should be available?
> Add multiplying boost option to ReRank query parser
> ---------------------------------------------------
>
> Key: SOLR-16643
> URL: https://issues.apache.org/jira/browse/SOLR-16643
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: search
> Affects Versions: 9.1.1
> Reporter: Andy Webb
> Priority: Minor
>
> I noticed the ReRank query parser adds the score from the {{reRankQuery}} to
> the original score. This means that existing edismax {{boost}} functions
> can't easily be migrated to use reranking instead, and reranking functions
> have the same issue as is noted at
> https://solr.apache.org/guide/solr/latest/query-guide/dismax-query-parser.html#bq-bf-shortcomings.
> In https://github.com/apache/solr/pull/1324 I've added a
> {{reRankOperator=multiply}} option to the ReRank parser which enables
> reranking functions to multiply the score instead.
> Is this a good thing to do, or have I missed a reason why only additive
> boosts should be available?
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