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https://issues.apache.org/jira/browse/LUCENE-4828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13601556#comment-13601556
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Yonik Seeley commented on LUCENE-4828:
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For highlighting, I've heard it argued both ways (i.e. prohibited terms can be
important too). I wasn't thinking about highlighting as much as something like
distributed IDF or other global term statistics. Depending on what type of
query is in the prohibited clause, using global statistics could be important.
> BooleanQuery.extractTerms should not recurse into MUST_NOT clauses
> ------------------------------------------------------------------
>
> Key: LUCENE-4828
> URL: https://issues.apache.org/jira/browse/LUCENE-4828
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/search
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Fix For: 5.0, 4.3
>
> Attachments: LUCENE-4828.patch
>
>
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