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https://issues.apache.org/jira/browse/MAHOUT-1255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13684694#comment-13684694
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Dan Filimon commented on MAHOUT-1255:
-------------------------------------
Might be something else, but I've been unable to track what exactly over the
weekend.
So, I'm committing this.
> Change BallKMeans weighting to use log(weight)
> ----------------------------------------------
>
> Key: MAHOUT-1255
> URL: https://issues.apache.org/jira/browse/MAHOUT-1255
> Project: Mahout
> Issue Type: Improvement
> Affects Versions: 0.8
> Reporter: Dan Filimon
> Assignee: Dan Filimon
> Priority: Minor
>
> Weirdness is happening in the reducer when doing k-means++ sampling by
> weights.
> Change from multiplying the probability with the weight to multiplying by 2 *
> log(weight).
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