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Posted to dev@mahout.apache.org by "Saikat Kanjilal (JIRA)" <ji...@apache.org> on 2014/06/17 01:30:02 UTC

[jira] [Commented] (MAHOUT-1583) cbind() operator for Scala DRMs

    [ https://issues.apache.org/jira/browse/MAHOUT-1583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14033175#comment-14033175 ] 

Saikat Kanjilal commented on MAHOUT-1583:
-----------------------------------------

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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