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https://issues.apache.org/jira/browse/LUCENE-4100?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13833573#comment-13833573
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Stefan Pohl commented on LUCENE-4100:
-------------------------------------

Thanks for your interest, [~daubman].

[~rcmuir] accurately describes the current status and challenges here. There 
have to be made quite a few major and even more minor steps to eventually 
arrive at anything general-purpose and user-ready.
However, given the feedback that I got so far (there seem to be many people 
that don't have extremely high NRT-requirements and who rebuild their whole 
indexes every few hours/days anyways), I still think that it would be 
worthwhile to have this as-is (with the limitation to static indexes) in a 
separate contrib-package that users are discouraged to use, except they really 
know what they are doing. Adding a few exceptions to guard users from wrong 
behaviour/misusage might also be useful.

As long as I, as the reporter, don't close the issue, it won't 'bite rot', 
don't worry ;) I also got to hear of quite some interest when I mentioned it at 
this year's Lucene/Solr-Revolutions.EU conference.

> 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: 4.7
>
>         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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