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https://issues.apache.org/jira/browse/LUCENE-8072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand updated LUCENE-8072:
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Attachment: LUCENE-8072.patch
Here is a patch that applies these ideas to various similarities.
> Improve accuracy of similarity scores
> -------------------------------------
>
> Key: LUCENE-8072
> URL: https://issues.apache.org/jira/browse/LUCENE-8072
> Project: Lucene - Core
> Issue Type: Task
> Reporter: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-8072.patch
>
>
> I noticed two things we could do to improve the accuracy of our scores:
> - use {{Math.log1p(x)}} instead of {{Math.log(1+x)}}, especially when x is
> expected to be small
> - use doubles for intermediate values that are used to compute norms in
> BM25Similarity
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