[jira] [Created] (MAHOUT-1300) Support for easy functional matrix views and some of their derivatives

["Dmitriy Lyubimov (JIRA)" <ji...@apache.org>]

Dmitriy Lyubimov created MAHOUT-1300:
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             Summary: Support for easy functional matrix views and some of their derivatives
                 Key: MAHOUT-1300
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1300
             Project: Mahout
          Issue Type: Improvement
    Affects Versions: 0.8
            Reporter: Dmitriy Lyubimov
            Assignee: Dmitriy Lyubimov
             Fix For: 0.9


Support for easy matrix views based on (Int,Int)=>Double function. 

Current derived views: 
(1) general functional view
(2) transposed matrix view
(3) uniform matrix view (based on function composition over symmetric uniform)
(4) symmetric uniform matrix view (based on murmur64)
(5) random gaussian matrix view.

I know that there's a trinary random matrix as well which could be scripted out as a view as well (methings), as well as Omega thing in distributed SSVD which also perhaps could be replaced by a symmetric uniform view.


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