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https://issues.apache.org/jira/browse/LUCENE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783530#action_12783530
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Otis Gospodnetic edited comment on LUCENE-2091 at 11/30/09 4:21 AM:
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Has anyone compared this particular BM25 impl. to the current Lucene's
quasi-VSM approach in terms of:
* any of the relevance eval methods
* indexing performance
* search performance
* ...
Aha, I found something:
http://markmail.org/message/c2r4v7zj7mduzs5d
Also, this issue is marked as contrib/*. Should this not go straight to core,
so more people actually use this and provide feedback? Who knows, there is a
chance (ha!) BM25 might turn out better than the current approach, and become
the default.
was (Author: otis):
Has anyone compared this particular BM25 impl. to the current Lucene's
quasi-VSM approach in terms of:
* any of the relevance eval methods
* indexing performance
* search performance
* ...
Also, this issue is marked as contrib/*. Should this not go straight to core,
so more people actually use this and provide feedback? Who knows, there is a
chance (ha!) BM25 might turn out better than the current approach, and become
the default.
> 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
>
> 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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