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https://issues.apache.org/jira/browse/LUCENE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12785284#action_12785284
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Robert Muir commented on LUCENE-2091:
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Hi Yuval, I think we should also consider BM25F being the really relevant
version for Lucene, as it is field-oriented (and dropping document-oriented
BM25).
because BM25F makes more sense for lucene, in my opinion. If you are searching
BODY for some keywords, who cares how long the AUTHOR field is!
I think narrowing focus to BM25F would eliminate confusion about things such as
"average document length" and then we work with just field and "average field
length" and more people will have ideas.
> 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: 3.1
>
> Attachments: 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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