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https://issues.apache.org/jira/browse/LUCENE-7823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tommaso Teofili resolved LUCENE-7823.
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    Resolution: Fixed

> Have a naive bayes classifier which uses plain BM25 scores instead of plain 
> frequencies
> ---------------------------------------------------------------------------------------
>
>                 Key: LUCENE-7823
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7823
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/classification
>            Reporter: Tommaso Teofili
>            Assignee: Tommaso Teofili
>             Fix For: master (7.0)
>
>
> {{SimpleNaiveBayesClassifier}} users term frequencies with add one smoothing 
> to calculate likelihood and just tf for prior. Given Lucene has switched to 
> BM25 it would be better to have a different impl which uses BM25 
> scoring as a probability measure of both prior and likelihood.



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