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From "Otis Gospodnetic (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LUCENE-4100) Maxscore - Efficient Scoring
Date Sat, 29 Dec 2012 03:20:13 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-4100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13540741#comment-13540741
] 

Otis Gospodnetic commented on LUCENE-4100:
------------------------------------------

Stefan, this sounds exciting.  What sort of speedups did you get?  Are you still looking to
include this into Lucene (4.1)?
                
> Maxscore - Efficient Scoring
> ----------------------------
>
>                 Key: LUCENE-4100
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4100
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/codecs, core/query/scoring, core/search
>    Affects Versions: 4.0-ALPHA
>            Reporter: Stefan Pohl
>              Labels: api-change, patch, performance
>             Fix For: 4.1
>
>         Attachments: contrib_maxscore.tgz, maxscore.patch
>
>
> At Berlin Buzzwords 2012, I will be presenting 'maxscore', an efficient algorithm first
published in the IR domain in 1995 by H. Turtle & J. Flood, that I find deserves more
attention among Lucene users (and developers).
> I implemented a proof of concept and did some performance measurements with example queries
and lucenebench, the package of Mike McCandless, resulting in very significant speedups.
> This ticket is to get started the discussion on including the implementation into Lucene's
codebase. Because the technique requires awareness about it from the Lucene user/developer,
it seems best to become a contrib/module package so that it consciously can be chosen to be
used.

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