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https://issues.apache.org/jira/browse/LUCENE-2091?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12847399#action_12847399
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Katja Hofmann commented on LUCENE-2091:
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Hi Yuval,
I was trying to apply the patch to both lucene 2.9.2 and 3.0.1. In both cases
it failed to compile. The problem is that it assumes a method
decodeNormValue(byte) in Similarity. I wasn't able to find a version where this
method exists. Do you have any suggestions on how to proceed?
The compilation errors were:
[javac] ...code/java/org/apache/lucene/bm25/BM25TermScorer.java:79: cannot
find symbol
[javac] symbol : method decodeNormValue(byte)
[javac] location: class org.apache.lucene.search.Similarity
[javac] float fieldNorm =
this.getSimilarity().decodeNormValue(this.norm[this.docID()]);
[javac] ^
[javac] ...code/java/org/apache/lucene/bm25f/BM25FTermScorer.java:148:
cannot find symbol
[javac] symbol : method decodeNormValue(byte)
[javac] location: class org.apache.lucene.search.Similarity
[javac] float fieldNorm =
this.getSimilarity().decodeNormValue(norms[i][this.docID()]);
[javac]
> 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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