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https://issues.apache.org/jira/browse/SPARK-17848?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apache Spark reassigned SPARK-17848:
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Assignee: Apache Spark
> Move LabelCol datatype cast into Predictor.fit
> ----------------------------------------------
>
> Key: SPARK-17848
> URL: https://issues.apache.org/jira/browse/SPARK-17848
> Project: Spark
> Issue Type: Improvement
> Components: ML
> Reporter: zhengruifeng
> Assignee: Apache Spark
>
> `Classifier.getNumClasses` can not support Non-Double types, and
> classification algos relying on it do not support non-double labelCol (like
> `NavieBayes`)
> As suggested by [~sethah], it is not a reasonable way to do datatype cast
> everywhere. And we can make cast only happen in `Predictor`.
> [~yanboliang][~josephkb][~srowen]
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