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From "julien nioche (JIRA)" <j...@apache.org>
Subject [jira] Updated: (MAHOUT-44) Override zSum and dot for SparseVector
Date Thu, 17 Apr 2008 16:09:25 GMT

     [ https://issues.apache.org/jira/browse/MAHOUT-44?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

julien nioche updated MAHOUT-44:
--------------------------------

    Attachment: SparseVector.diff

diff file which adds implementation of zSum and dot to SparseVectors  

> Override zSum and dot for SparseVector
> --------------------------------------
>
>                 Key: MAHOUT-44
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-44
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Matrix
>    Affects Versions: 0.1
>            Reporter: julien nioche
>            Priority: Minor
>             Fix For: 0.1
>
>         Attachments: SparseVector.diff
>
>
> revision 649163
> The patch attached overrides the zSum() and dot() methods in SparseVector. This is more
efficient than relying on the methods from AbstractVector which iterate on all the indices
of the Vectors. 

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