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Posted to issues@spark.apache.org by "Seth Hendrickson (JIRA)" <ji...@apache.org> on 2016/04/22 21:49:12 UTC
[jira] [Commented] (SPARK-9478) Add class weights to Random Forest
[ https://issues.apache.org/jira/browse/SPARK-9478?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15254539#comment-15254539 ]
Seth Hendrickson commented on SPARK-9478:
-----------------------------------------
[~josephkb] I have a PR ready for this. It's being blocked by [SPARK-14610|https://issues.apache.org/jira/browse/SPARK-14610] and [SPARK-14599|https://issues.apache.org/jira/browse/SPARK-14599]. Is there any hope to get it in 2.0?
> Add class weights to Random Forest
> ----------------------------------
>
> Key: SPARK-9478
> URL: https://issues.apache.org/jira/browse/SPARK-9478
> Project: Spark
> Issue Type: Improvement
> Components: ML, MLlib
> Affects Versions: 1.4.1
> Reporter: Patrick Crenshaw
>
> 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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