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From "Ian Holsman (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2091) Add BM25 Scoring to Lucene
Date Fri, 11 Mar 2011 00:33:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13005428#comment-13005428
] 

Ian Holsman commented on LUCENE-2091:
-------------------------------------

Hi Rob.
your attachment (BM25SimilarityProvider) seems to rely on some other code (Stats.DocFieldStats)
& AggregatesProvider .. which I guess is part of your DFR patch.. can you provide a pointer
to that..

TIA
also I'm guessing that those rely on 2392, and provides an alternate implementation to this.
Should we just close this as a duplicate to 2392 ?

> Add BM25 Scoring to Lucene
> --------------------------
>
>                 Key: LUCENE-2091
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2091
>             Project: Lucene - Java
>          Issue Type: New Feature
>          Components: contrib/*
>            Reporter: Yuval Feinstein
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: BM25SimilarityProvider.java, LUCENE-2091.patch, persianlucene.jpg
>
>   Original Estimate: 48h
>  Remaining Estimate: 48h
>
> http://nlp.uned.es/~jperezi/Lucene-BM25/ 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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