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https://issues.apache.org/jira/browse/LUCENE-8216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jim Ferenczi updated LUCENE-8216:
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    Attachment:     (was: LUCENE-8652.patch)

> Better cross-field scoring
> --------------------------
>
>                 Key: LUCENE-8216
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8216
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Major
>         Attachments: LUCENE-8216.patch, LUCENE-8216.patch
>
>
> I'd like Lucene to have better support for scoring across multiple fields. 
> Today we have BlendedTermQuery which tries to help there but it probably 
> tries to do too much on some aspects (handling cross-field term queries AND 
> synonyms) and too little on other ones (it tries to merge index-level 
> statistics, but not per-document statistics like tf and norm).
> Maybe we could implement something like BM25F so that queries across multiple 
> fields would retain the benefits of BM25 like the fact that the impact of the 
> term frequency saturates quickly, which is not the case with BlendedTermQuery 
> if you have occurrences across many fields.



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