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From "Ajo Fod (JIRA)" <>
Subject [jira] [Commented] (MATH-978) StorelessCovariance to be map/reducable
Date Thu, 30 May 2013 21:52:20 GMT


Ajo Fod commented on MATH-978:

The extension is from the paper referenced in the StorelessCovariance class docs.

I'm not sure how to make unit tests and provide the patches. 

> StorelessCovariance to be map/reducable
> ---------------------------------------
>                 Key: MATH-978
>                 URL:
>             Project: Commons Math
>          Issue Type: New Feature
>            Reporter: Ajo Fod
>   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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