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Posted to issues@spark.apache.org by "Nicholas Chammas (JIRA)" <ji...@apache.org> on 2016/07/07 20:21:11 UTC

[jira] [Updated] (SPARK-16156) RowMatrıx Covariance

     [ https://issues.apache.org/jira/browse/SPARK-16156?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Nicholas Chammas updated SPARK-16156:
-------------------------------------
    Component/s:     (was: MLilb)
                 MLlib

> RowMatrıx Covariance
> --------------------
>
>                 Key: SPARK-16156
>                 URL: https://issues.apache.org/jira/browse/SPARK-16156
>             Project: Spark
>          Issue Type: Bug
>          Components: MLlib
>    Affects Versions: 2.0.0
>         Environment: Spark MLLIB
>            Reporter: Hayri Volkan Agun
>   Original Estimate: 168h
>  Remaining Estimate: 168h
>
> Spark doesn't provide a good solution of covariance for RowMatrix with large columns. This can be fixed with using efficient stable computations and approximating to the true mean.    



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