lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Paul Elschot (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (LUCENE-3364) Add score threshold into Scorer.score()
Date Sun, 07 Aug 2011 10:12:27 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-3364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13080561#comment-13080561
] 

Paul Elschot edited comment on LUCENE-3364 at 8/7/11 10:10 AM:
---------------------------------------------------------------

To have more more advantages the minimum score could be given as a parameter to the nextDoc()
and advance() methods.


      was (Author: paul.elschot@xs4all.nl):
    To have more more advantages the minimum score could be given as a parameter to the next()
and advance() methods.

  
> Add score threshold into Scorer.score()
> ---------------------------------------
>
>                 Key: LUCENE-3364
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3364
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: core/query/scoring
>            Reporter: John Wang
>
> This is an optimization for scoring.
> Given a Scorer.score() implementation, where features are gathered to calculate a score.
> Proposal, add a parameter to score, e.g. score(float threshold)
> This threshold is the minimum score to "beat" to make it to the current PriorityQueue.
This could potential save a great deal of wasted calculation in the cases where recall is
large.
> In our case specifically, some of the features needed to do calculation can be expensive
to obtain, it would be nice to have a place to decide whether or not even fetching these features
are necessary.
> Also, if we know the score would be low, simply threshold can be returned.
> Let me know if this makes sense and I can work on a patch.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@lucene.apache.org
For additional commands, e-mail: dev-help@lucene.apache.org


Mime
View raw message