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From "Yuval Feinstein (JIRA)" <>
Subject [jira] Commented: (LUCENE-2091) Add BM25 Scoring to Lucene
Date Sat, 06 Mar 2010 22:10:27 GMT


Yuval Feinstein commented on LUCENE-2091:

@Vinay - Please take the LUCENE-2091.patch file from this very JIRA issue, and try to apply
it. I modified the code so that it works with Lucene 2.9.1, and therefore should be compatible
with Lucene 3.0.1 as well. The only feature missing is the explain() function. If this requires
further modifications to work with Lucene 3.0.1, please let me know and I will try to handle
the changes.

> Add BM25 Scoring to Lucene
> --------------------------
>                 Key: LUCENE-2091
>                 URL:
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>            Reporter: Yuval Feinstein
>            Priority: Minor
>             Fix For: 3.1
>         Attachments: LUCENE-2091.patch, persianlucene.jpg
>   Original Estimate: 48h
>  Remaining Estimate: 48h
> describes an implementation of Okapi-BM25 scoring
in the Lucene framework,
> as an alternative to the standard Lucene scoring (which is a version of mixed boolean/TFIDF).
> I have refactored this a bit, added unit tests and improved the runtime somewhat.
> I would like to contribute the code to Lucene under contrib. 

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