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https://issues.apache.org/jira/browse/SPARK-7425?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14736295#comment-14736295
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Glenn Weidner commented on SPARK-7425:
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Unit tests for other numeric types have not been added.

> spark.ml Predictor should support other numeric types for label
> ---------------------------------------------------------------
>
>                 Key: SPARK-7425
>                 URL: https://issues.apache.org/jira/browse/SPARK-7425
>             Project: Spark
>          Issue Type: Improvement
>          Components: ML
>            Reporter: Joseph K. Bradley
>            Priority: Minor
>              Labels: starter
>
> Currently, the Predictor abstraction expects the input labelCol type to be 
> DoubleType, but we should support other numeric types.  This will involve 
> updating the PredictorParams.validateAndTransformSchema method.



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