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Posted to issues@spark.apache.org by "Vladimir Feinberg (JIRA)" <ji...@apache.org> on 2016/08/09 07:50:20 UTC

[jira] [Created] (SPARK-16969) GBTClassifier needs a raw prediction column

Vladimir Feinberg created SPARK-16969:
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             Summary: GBTClassifier needs a raw prediction column
                 Key: SPARK-16969
                 URL: https://issues.apache.org/jira/browse/SPARK-16969
             Project: Spark
          Issue Type: Bug
            Reporter: Vladimir Feinberg


When working with a skewed-label dataset I found the GBTClassifier pretty unusable because it performs an automatic thresholding at the halfway point, without exposing the raw prediction.

This prevents use of different thresholds and any of the BinaryClassificationEvaluator tools.



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