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Nov 20, 2009, 9:40 AM
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[jira] Updated: (LUCENE-1907) sumOfSquared weights should be calculated as part of queryNorm
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[ https://issues.apache.org/jira/browse/LUCENE-1907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Mark Miller updated LUCENE-1907:
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Attachment: LUCENE-1907.patch
to trunk
> 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
> Attachments: LUCENE-1907.patch, LUCENE-1907.patch, LUCENE-1907.patch
>
>
> 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.
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