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https://issues.apache.org/jira/browse/LUCENE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12870605#action_12870605
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Yuval Feinstein commented on LUCENE-2091:
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@Vinay - I have this suggestion. I am unsure whether it will work.
First, I would implement the BM25BooleanQuery, and use it to create a
QueryWrapperFilter qwf.
(See
http://lucene.apache.org/java/3_0_0/api/all/org/apache/lucene/search/QueryWrapperFilter.html)
Next, I would create a Phrase query, and call search(phraseQuery, qwf, 50).
This way, the scorer will first look for matches for the BM25 query, and later
look among them for matches for the phrase query.
Hope this is understandable.
-- Yuval
> 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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