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From "Apache Spark (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-12230) WeightedLeastSquares.fit() should handle division by zero properly if standard deviation of target variable is zero.
Date Mon, 14 Dec 2015 17:46:47 GMT

    [ https://issues.apache.org/jira/browse/SPARK-12230?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15056360#comment-15056360
] 

Apache Spark commented on SPARK-12230:
--------------------------------------

User 'iyounus' has created a pull request for this issue:
https://github.com/apache/spark/pull/10274

> 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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