Github user jkbradley commented on the pull request:
https://github.com/apache/spark/pull/5626#issuecomment-95739749
Updated! I think the only thing I didn't do was make stepSize a shared
param. Copying from the comment above:
> I'm hesitating about putting it in sharedParams since the intended range
can differ between algorithms. For GBTs, it should be in (0, 1], but it could
be different for other algs.
I updated the doc in Node.prediction, as well as getLeft/RightCategories.
I'll make a JIRA for using BitSet internally for categories.
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