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https://issues.apache.org/jira/browse/SPARK-7424?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yanbo Liang updated SPARK-7424:
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Comment: was deleted
(was: [~josephkb] We should copy metadata from the labelCol to the
predictionCol. But we can not do it in
PredictorParams.validateAndTransformSchema, because we did not use the return
value of validateAndTransformSchema as the output DataFrame schema. The
DataFrame and its schema are generated at ClassificationModel.transform and
PredictionModel.transform directly.)
> spark.ml classification, regression abstractions should add metadata to
> output column
> -------------------------------------------------------------------------------------
>
> Key: SPARK-7424
> URL: https://issues.apache.org/jira/browse/SPARK-7424
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: Joseph K. Bradley
>
> Update ClassificationModel, ProbabilisticClassificationModel prediction to
> include numClasses in output column metadata.
> Update RegressionModel to specify output column metadata as well.
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