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https://issues.apache.org/jira/browse/MAHOUT-1721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Suneel Marthi closed MAHOUT-1721.
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> rowSumsMap summary for non-int-keyed DRMs
> -----------------------------------------
>
> Key: MAHOUT-1721
> URL: https://issues.apache.org/jira/browse/MAHOUT-1721
> Project: Mahout
> Issue Type: Improvement
> Reporter: Dmitriy Lyubimov
> Assignee: Dmitriy Lyubimov
> Fix For: 0.10.2
>
>
> we have rowSums() that are enabled only if matrix is int-keyed
> (DrmLike[Int]), because non-int keys cannot be mapped to ordinal positions.
> however, this api still can exist -- except the output should really be
> Map[K,Double].
> PR https://github.com/apache/mahout/pull/135
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