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Posted to dev@lucene.apache.org by "Denis Lantsman (JIRA)" <ji...@apache.org> on 2014/11/03 23:35:36 UTC
[jira] [Updated] (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:all-tabpanel ]
Denis Lantsman updated LUCENE-6042:
-----------------------------------
Attachment: CustomScoreQuery.patch
> 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
> Priority: Minor
> Attachments: CustomScoreQuery.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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