[jira] [Created] (SOLR-16643) Add multiplying boost option to ReRank query parser

["Andy Webb (Jira)" <ji...@apache.org>]

Andy Webb created SOLR-16643:
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             Summary: 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


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?



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