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From "Hoss Man (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (LUCENE-557) search vs explain - score discrepancies
Date Sat, 13 May 2006 03:06:09 GMT
     [ http://issues.apache.org/jira/browse/LUCENE-557?page=all ]

Hoss Man reassigned LUCENE-557:
-------------------------------

    Assign To: Hoss Man


Status Update:

The patches so far fix all of the known issues that don't involve a Scorer "matching" a document
with a score of 0.0 ... the SpanScorer patch isn't pretty ... but it may be considered acceptable
depending on the scope of LUCENE-569.  If LUCENE-569 does get fixed, no changes to SpanScorer
for explain should be needed.

Recent mailing list discussion on the merits of changing the Explanation API to deal with
the remaining cases...

http://www.nabble.com/BooleanWeight.normalize%28float%29-doesn%27t-normalize-prohibited-clauses--t1596471.html#a4347644

I'm going to let all of this sit for a bit and revisit it later.

> search vs explain - score discrepancies
> ---------------------------------------
>
>          Key: LUCENE-557
>          URL: http://issues.apache.org/jira/browse/LUCENE-557
>      Project: Lucene - Java
>         Type: Bug

>   Components: Search
>     Reporter: Hoss Man
>     Assignee: Hoss Man
>  Attachments: LUCENE-557-BooleanQuery-explain-fix.patch, LUCENE-557-FilteredQuery-explain-fix.patch,
LUCENE-557-SpanScorer-explain-HACK-fix.patch, LUCENE-557-modify-existing-tests.patch, LUCENE-557-modify-existing-tests.patch,
LUCENE-557-newtests.zip, LUCENE-557-newtests.zip
>
> I'm on a mission to demonstrate (and then hopefully fix) any inconsistencies between
the score you get for a doc when executing a search, and the score you get when asking for
an explanation of the query for that doc.

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