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Posted to dev@lucene.apache.org by "Adrien Grand (JIRA)" <ji...@apache.org> on 2015/02/20 16:55:12 UTC

[jira] [Resolved] (LUCENE-6260) Simplify ExactPhraseScorer

     [ https://issues.apache.org/jira/browse/LUCENE-6260?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Adrien Grand resolved LUCENE-6260.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 5.1
                   Trunk

> Simplify ExactPhraseScorer
> --------------------------
>
>                 Key: LUCENE-6260
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6260
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Adrien Grand
>            Priority: Minor
>             Fix For: Trunk, 5.1
>
>         Attachments: LUCENE-6260.patch
>
>
> ExactPhraseScorer tries to intersect positions using windows of 4096 documents. In LUCENE-2410 it was reported that it helped a lot but I tried again on wikibig with a simpler impl that does advance one position at a time and the performance difference was only of a few percents. I'm guessing that maybe other changes (eg. the new postings format?) do not make this behaviour as useful as it used to be?



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