lucene-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Mark Miller (JIRA)" <j...@apache.org>
Subject [jira] Created: (LUCENE-1907) sumOfSquared weights should be calculated as part of queryNorm
Date Thu, 10 Sep 2009 23:41:57 GMT
sumOfSquared weights should be calculated as part of queryNorm
--------------------------------------------------------------

                 Key: LUCENE-1907
                 URL: https://issues.apache.org/jira/browse/LUCENE-1907
             Project: Lucene - Java
          Issue Type: Bug
            Reporter: Mark Miller
            Priority: Minor


see the related issue for comments.

its a bummer - doesn't look like we have time to address this, but its the best release for
it - back compat requires the reflection stuff that Similarity already has (and we hope to
remove next release). It would suck to have to hold onto it - so it seems unlikely we will
do this at a later time.

The idea is that the sumOfSquaredWeights computation should be specific to the queryNorm impl
- so the queryNorm should accept the Weight instead, and if its using the euclidean distance
formula, it can do the sumOfSquared calculations - but if its doing another normalization,
these can be skipped (in each termweight, booleanweight, etc). Right now you pay for sumOfSquared
no matter what, and the logic separation is a little off.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


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


Mime
View raw message