Github user BryanCutler commented on a diff in the pull request: https://github.com/apache/spark/pull/19110#discussion_r137068863 --- Diff: mllib/src/main/scala/org/apache/spark/ml/classification/OneVsRest.scala --- @@ -297,6 +298,15 @@ final class OneVsRest @Since("1.4.0") ( def setPredictionCol(value: String): this.type = set(predictionCol, value) /** + * @group expertSetParam + * The implementation of parallel one vs. rest runs the classification for + * each class in a separate threads. + */ --- End diff -- from the previous PR, `@group expertSetParam` should be at the bottom
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