Github user holdenk commented on a diff in the pull request: https://github.com/apache/spark/pull/13894#discussion_r69808182 --- Diff: mllib/src/main/scala/org/apache/spark/ml/tuning/CrossValidator.scala --- @@ -56,7 +56,10 @@ private[ml] trait CrossValidatorParams extends ValidatorParams { /** * :: Experimental :: - * K-fold cross validation. + * CrossValidator begins by splitting the dataset into a set of non-overlapping randomly --- End diff -- +1 - is good to mention why its splitting the dataset/what its for.
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