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Posted to issues@spark.apache.org by "Imran Younus (JIRA)" <ji...@apache.org> on 2015/12/09 04:54:10 UTC

[jira] [Commented] (SPARK-12230) WeightedLeastSquares.fit() should handle division by zero properly if standard deviation of target variable is zero.

    [ https://issues.apache.org/jira/browse/SPARK-12230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15047985#comment-15047985 ] 

Imran Younus commented on SPARK-12230:
--------------------------------------

I can work on this.

> WeightedLeastSquares.fit() should handle division by zero properly if standard deviation of target variable is zero.
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-12230
>                 URL: https://issues.apache.org/jira/browse/SPARK-12230
>             Project: Spark
>          Issue Type: Bug
>          Components: ML
>            Reporter: Imran Younus
>            Priority: Trivial
>
> This is a TODO in WeightedLeastSquares.fit() method. If the standard deviation of the target variablel is zero, then the regression is meaningless. I think the fit() method should inform the user and exit nicely.



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