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Posted to dev@lucene.apache.org by "ASF subversion and git services (JIRA)" <ji...@apache.org> on 2014/12/01 04:28:12 UTC
[jira] [Commented] (LUCENE-6042) CustomScoreQuery Explain differs
from the actual score when topLevelBoost is used.
[ https://issues.apache.org/jira/browse/LUCENE-6042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14229383#comment-14229383 ]
ASF subversion and git services commented on LUCENE-6042:
---------------------------------------------------------
Commit 1642625 from [~rcmuir] in branch 'dev/branches/lucene_solr_4_10'
[ https://svn.apache.org/r1642625 ]
LUCENE-6042: fix CustomScoreQuery explain to properly factor boost
> CustomScoreQuery Explain differs from the actual score when topLevelBoost is used.
> ----------------------------------------------------------------------------------
>
> Key: LUCENE-6042
> URL: https://issues.apache.org/jira/browse/LUCENE-6042
> Project: Lucene - Core
> Issue Type: Bug
> Components: core/query/scoring
> Affects Versions: 4.8
> Reporter: Denis Lantsman
> Assignee: Robert Muir
> Priority: Minor
> Fix For: 4.10.3, 5.0, Trunk
>
> Attachments: CustomScoreQuery.patch, LUCENE-6042.patch
>
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> CustomScoreQuery.java, doExplain has the following line:
> {code}
> res.addDetail(new Explanation(getBoost(), "queryBoost"));
> {code}
> This multiplies the custom score query by just the boost of the current query, and not by
> {code}
> queryWeight=topLevelBoost*getBoost();
> {code}
> which is the value that's actually used during scoring. This leads to drastically different scores in the debug info, relative to the actual score, when the query is a subquery of another one, like a BooleanQuery clause, with a non-1 boost.
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