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https://issues.apache.org/jira/browse/MAHOUT-1313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13738823#comment-13738823
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Hudson commented on MAHOUT-1313:
--------------------------------
SUCCESS: Integrated in Mahout-Quality #2195 (See
[https://builds.apache.org/job/Mahout-Quality/2195/])
MAHOUT-1313: Fixed unwanted integral division bug in RowSimilarityJob
downsampling code where precision should have been retained (sslavic: rev
1513632)
* /mahout/trunk/CHANGELOG
*
/mahout/trunk/core/src/main/java/org/apache/mahout/math/hadoop/similarity/cooccurrence/RowSimilarityJob.java
> RowSimilarityJob, sampleDown method problem
> -------------------------------------------
>
> Key: MAHOUT-1313
> URL: https://issues.apache.org/jira/browse/MAHOUT-1313
> Project: Mahout
> Issue Type: Bug
> Components: Collaborative Filtering
> Affects Versions: 0.8
> Reporter: sam wu
> Assignee: Stevo Slavic
> Priority: Minor
> Fix For: 0.9
>
>
> RowSimilarityJob.java , sampleDown method
> ----line 291 or 300
> double rowSampleRate = Math.min(maxObservationsPerRow, observationsPerRow) /
> observationsPerRow;
> currently always return either 0.0 or 1.0.
> Should return true double, eg: 0.34,...
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