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From "Chris T (JIRA)" <>
Subject [jira] [Commented] (SPARK-5436) Validate GradientBoostedTrees during training
Date Thu, 29 Jan 2015 02:49:34 GMT


Chris T commented on SPARK-5436:

I may be able to attempt this, but I'm not confident I'll be able to implement a solution
(or even one of sufficient quality). I only wrote my first line of scala about a week ago,
so I'm still finding my way around how things work. If I can come up with something, I'll
share it...

> Validate GradientBoostedTrees during training
> ---------------------------------------------
>                 Key: SPARK-5436
>                 URL:
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>    Affects Versions: 1.3.0
>            Reporter: Joseph K. Bradley
> For Gradient Boosting, it would be valuable to compute test error on a separate validation
set during training.  That way, training could stop early based on the test error (or some
other metric specified by the user).

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