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https://issues.apache.org/jira/browse/LUCENE-4289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir resolved LUCENE-4289.
---------------------------------
Resolution: Fixed
Fix Version/s: 3.6.2
5.0
4.0
I backported too. Note in 3.6 fast-vector-highlighter is unaffected,
it doesn't compute IDF.
> highlighter idf calculation problems
> ------------------------------------
>
> Key: LUCENE-4289
> URL: https://issues.apache.org/jira/browse/LUCENE-4289
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Fix For: 4.0, 5.0, 3.6.2
>
> Attachments: LUCENE-4289.patch
>
>
> * highlighter uses numDocs instead of maxDoc
> * fastvectorhighlighter uses numDocs - numDeletedDocs instead of maxDoc (will
> go negative if more than half of docs are marked deleted)
> * fastvectorhighlighter calls docFreq and computes IDF per-position when it
> won't change (inefficient)
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