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From "Ted Dunning (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MAHOUT-1059) New matrix extensions
Date Tue, 21 Aug 2012 02:20:38 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-1059?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Dunning updated MAHOUT-1059:
--------------------------------

    Attachment: 0004-MAHOUT-1059-Indentation.patch
                0003-MAHOUT-1060-Move-distance-measures-to-math-as-much-a.patch
                0003-MAHOUT-1059-Add-generic-vector-test.patch
                0002-MAHOUT-1059-Stylistic-cleanups.patch
                0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch

Here are some revised patches with a proposed AbstractVectorTest.  This style allows a lot
of redundant code to be eliminated and doesn't require mocking magic.
                
> New matrix extensions
> ---------------------
>
>                 Key: MAHOUT-1059
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1059
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>            Reporter: Ted Dunning
>             Fix For: 0.8
>
>         Attachments: 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch,
0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch, 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch,
0002-MAHOUT-1059-Stylistic-cleanups.patch, 0002-MAHOUT-1059-Stylistic-cleanups.patch, 0003-MAHOUT-1059-Add-generic-vector-test.patch,
0003-MAHOUT-1060-Move-distance-measures-to-math-as-much-a.patch, 0004-MAHOUT-1059-Indentation.patch,
DelegatingVectorTest.java
>
>
> The upcoming clustering needs several capabilities to support different operations. 
These include some matrix extensions for adding behaviors to different kinds of matrices.
 Also there is a file based matrix that uses mmap to access a file as if it were a matrix
in shared memory.  Since this is off-heap and shared between processes, it can seriously help
some programs.

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