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Posted to issues@spark.apache.org by "Yanbo Liang (JIRA)" <ji...@apache.org> on 2016/07/06 09:57:10 UTC
[jira] [Resolved] (SPARK-16307) Improve testing for DecisionTree
variances
[ https://issues.apache.org/jira/browse/SPARK-16307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yanbo Liang resolved SPARK-16307.
---------------------------------
Resolution: Fixed
Fix Version/s: 2.1.0
Target Version/s: 2.1.0
> Improve testing for DecisionTree variances
> ------------------------------------------
>
> Key: SPARK-16307
> URL: https://issues.apache.org/jira/browse/SPARK-16307
> Project: Spark
> Issue Type: Test
> Reporter: Manoj Kumar
> Assignee: Manoj Kumar
> Priority: Minor
> Fix For: 2.1.0
>
>
> The current test assumes that Impurity.calculate() returns the variance correctly. A better approach would be to test if the variance returned equals the variance that we can manually verify on a toy data and tree.
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