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https://issues.apache.org/jira/browse/LUCENE-8135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16849444#comment-16849444
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ASF subversion and git services commented on LUCENE-8135:
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Commit c252b92caa2f32ca96c3381fd8af2601be42036f in lucene-solr's branch
refs/heads/master from Adrien Grand
[ https://gitbox.apache.org/repos/asf?p=lucene-solr.git;h=c252b92 ]
LUCENE-8135: Fix number of clauses randomization.
> Implement Block-Max WAND
> ------------------------
>
> Key: LUCENE-8135
> URL: https://issues.apache.org/jira/browse/LUCENE-8135
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Adrien Grand
> Priority: Minor
> Fix For: 8.0
>
> Attachments: LUCENE-8135.patch
>
>
> This issue is about building on top of LUCENE-4198 in order to leverage block
> maximum scores instead of global maximum scores. This is documented in
> "Faster Top-k Document Retrieval Using Block-Max Indexes"
> ([http://engineering.nyu.edu/~suel/papers/bmw.pdf)|http://engineering.nyu.edu/~suel/papers/bmw.pdf]
> and called BMW (Block-Max WAND).
>
> Using block max scores adds overhead to scorers, but also provides better
> upper bounds of the scores and is expected to remain efficient in presence of
> outliers (LUCENE-8087).
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