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Posted to issues@spark.apache.org by "zhengruifeng (JIRA)" <ji...@apache.org> on 2016/10/10 05:19:20 UTC

[jira] [Created] (SPARK-17848) Move LabelCol datatype cast into Predictor.fit

zhengruifeng created SPARK-17848:
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             Summary: 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


`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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