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https://issues.apache.org/jira/browse/MAHOUT-1723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy Lyubimov updated MAHOUT-1723:
-------------------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> Optional structural "flavor" abstraction for in-core matrices.
> --------------------------------------------------------------
>
>                 Key: MAHOUT-1723
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1723
>             Project: Mahout
>          Issue Type: Improvement
>            Reporter: Dmitriy Lyubimov
>            Assignee: Dmitriy Lyubimov
>             Fix For: 0.10.2
>
>
> This is structural abstraction (which is optional for a matrix but 
> implemented for most we use) that allows to interrogate matrix operands 
> whether they are dense or sparse, row or column-major or diagonal etc. 
> without coding to a concrete matrix implementation class.
> this allows to build structure-optimized iterations. 
> PR https://github.com/apache/mahout/pull/135



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