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https://issues.apache.org/jira/browse/LUCENE-5867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14082778#comment-14082778
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Jack Krupansky commented on LUCENE-5867:
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Would this be expected to result in any dramatic improvement in indexing or
query performance, or a dramatic reduction in index size?
> Add BooleanSimilarity
> ---------------------
>
> Key: LUCENE-5867
> URL: https://issues.apache.org/jira/browse/LUCENE-5867
> Project: Lucene - Core
> Issue Type: New Feature
> Reporter: Robert Muir
> Attachments: LUCENE-5867.patch
>
>
> This can be used when the user doesn't want tf/idf scoring for some reason.
> The idea is that the score is just query_time_boost * index_time_boost, no
> queryNorm/IDF/TF/lengthNorm...
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