Github user hhbyyh commented on a diff in the pull request:
https://github.com/apache/spark/pull/15881#discussion_r87939017
--- Diff: mllib/src/main/scala/org/apache/spark/ml/tree/treeParams.scala ---
@@ -73,11 +73,13 @@ private[ml] trait DecisionTreeParams extends
PredictorParams
/**
* Minimum information gain for a split to be considered at a tree node.
+ * Should be >= 0.0.
* (default = 0.0)
* @group param
*/
final val minInfoGain: DoubleParam = new DoubleParam(this, "minInfoGain",
- "Minimum information gain for a split to be considered at a tree
node.")
+ "Minimum information gain for a split to be considered at a tree
node.",
--- End diff --
Sorry to miss this. Perhaps add >=0 at the end to be consistent with others.
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