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Posted to issues@spark.apache.org by "DB Tsai (JIRA)" <ji...@apache.org> on 2014/09/01 00:09:21 UTC

[jira] [Closed] (SPARK-3317) The loss of regularization in Updater should use the oldWeights

     [ https://issues.apache.org/jira/browse/SPARK-3317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

DB Tsai closed SPARK-3317.
--------------------------
    Resolution: Won't Fix

> The loss of regularization in Updater should use the oldWeights
> ---------------------------------------------------------------
>
>                 Key: SPARK-3317
>                 URL: https://issues.apache.org/jira/browse/SPARK-3317
>             Project: Spark
>          Issue Type: Bug
>          Components: MLlib
>            Reporter: DB Tsai
>
> The current loss of the regularization is computed from the newWeights which is not correct.  The loss, R(w) = 1/2 ||w||^2 should be computed with the oldWeights.



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