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https://issues.apache.org/jira/browse/MAHOUT-1756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14632702#comment-14632702
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ASF GitHub Bot commented on MAHOUT-1756:
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Github user dlyubimov commented on the pull request:

    https://github.com/apache/mahout/pull/153#issuecomment-122633072
  
    +1 


> Missing +=: and *=: operators on vectors 
> -----------------------------------------
>
>                 Key: MAHOUT-1756
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1756
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Dmitriy Lyubimov
>            Assignee: Suneel Marthi
>             Fix For: 0.10.2, 0.11.0
>
>
> Matrices support expressions like a *=: b (do elementwise a*b on b in-place) 
> but vectors don't. sometimes it is highly desirable to do that type of 
> expression, and for consistency, we should enable this for vectors too.



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