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Posted to issues@spark.apache.org by "Xiangrui Meng (JIRA)" <ji...@apache.org> on 2016/01/20 20:17:39 UTC
[jira] [Assigned] (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:all-tabpanel ]
Xiangrui Meng reassigned SPARK-12230:
-------------------------------------
Assignee: Xiangrui Meng
> 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
> Assignee: Xiangrui Meng
> Priority: Trivial
> Fix For: 2.0.0
>
>
> 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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