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From "Thomas Neidhart (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (MATH-978) StorelessCovariance to be map/reducable
Date Thu, 29 Aug 2013 21:37:53 GMT

     [ https://issues.apache.org/jira/browse/MATH-978?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Thomas Neidhart updated MATH-978:
---------------------------------

    Fix Version/s:     (was: 4.0)
                   3.3
    
> StorelessCovariance to be map/reducable
> ---------------------------------------
>
>                 Key: MATH-978
>                 URL: https://issues.apache.org/jira/browse/MATH-978
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Ajo Fod
>             Fix For: 3.3
>
>         Attachments: vcs-diff1930559867411001739.patch
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> Current version of StorelessCovariance and StorelessBivariateCovariance don't allow adding
another StorelessCovariance to an existing one. With this feature it is possible to run maps
on different data sets and then do a final reduce to get the overall covariance.

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