[jira] [Closed] (SOLR-16643) Add multiply/replace options to ReRank query parser

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

     [ https://issues.apache.org/jira/browse/SOLR-16643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Webb closed SOLR-16643.
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> Add multiply/replace options to ReRank query parser
> ---------------------------------------------------
>
>                 Key: SOLR-16643
>                 URL: https://issues.apache.org/jira/browse/SOLR-16643
>             Project: Solr
>          Issue Type: Improvement
>          Components: search
>    Affects Versions: 9.1.1
>            Reporter: Andy Webb
>            Priority: Minor
>             Fix For: 9.2
>
>          Time Spent: 5h 20m
>  Remaining Estimate: 0h
>
> 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/1431 I've added a {{reRankOperator=multiply}} option to the ReRank parser which enables reranking functions to multiply the score instead. A {{reRankOperator=replace}} option is available too, enabling the reranked scores to be independent of the original scores.



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