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Posted to issues@spark.apache.org by "Yuewei Na (JIRA)" <ji...@apache.org> on 2016/06/14 00:52:57 UTC

[jira] [Created] (SPARK-15936) CLONE - Add class weights to Random Forest

Yuewei Na created SPARK-15936:
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             Summary: CLONE - Add class weights to Random Forest
                 Key: SPARK-15936
                 URL: https://issues.apache.org/jira/browse/SPARK-15936
             Project: Spark
          Issue Type: Improvement
          Components: ML, MLlib
    Affects Versions: 1.4.1
            Reporter: Yuewei Na


Currently, this implementation of random forest does not support class weights. Class weights are important when there is imbalanced training data or the evaluation metric of a classifier is imbalanced (e.g. true positive rate at some false positive threshold). 



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