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https://issues.apache.org/jira/browse/MAHOUT-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033175#comment-14033175
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Saikat Kanjilal commented on MAHOUT-1583:
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Why not combine this with 1490 and create a set of APIs around a dataframe like
we were doing and add cbind to that?
> cbind() operator for Scala DRMs
> -------------------------------
>
> Key: MAHOUT-1583
> URL: https://issues.apache.org/jira/browse/MAHOUT-1583
> Project: Mahout
> Issue Type: Task
> Reporter: Dmitriy Lyubimov
> Assignee: Dmitriy Lyubimov
> Fix For: 1.0
>
>
> Another R-like operator, cbind (stitching two matrices together). Seems to
> come up now and then.
> Just like with elementwise operations, and, perhaps some other, it will have
> two physical implementation paths, one is zip for identically distributed
> operators, and another one is full join in case they are not.
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