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https://issues.apache.org/jira/browse/SPARK-9721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15209556#comment-15209556
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Joseph K. Bradley commented on SPARK-9721:
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This issue came up when looking at the aggregation mechanisms for random
forests. The tree data do not include the mechanisms for aggregating
predictions from multiple trees, so comparing the tree data does not completely
test functionality.
> TreeTests.checkEqual should compare predictions on data
> -------------------------------------------------------
>
> Key: SPARK-9721
> URL: https://issues.apache.org/jira/browse/SPARK-9721
> Project: Spark
> Issue Type: Test
> Components: ML
> Reporter: Joseph K. Bradley
>
> In spark.ml tree and ensemble unit tests:
> Modify TreeTests.checkEqual in unit tests to compare predictions on the
> training data, rather than only comparing the trees themselves.
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