Github user MechCoder commented on a diff in the pull request:
https://github.com/apache/spark/pull/4231#discussion_r24789326
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/tree/DecisionTree.scala ---
@@ -1064,9 +1045,12 @@ object DecisionTree extends Serializable with
Logging {
// Bins correspond to feature values, so we do not need to
compute splits or bins
// beforehand. Splits are constructed as needed during
training.
splits(featureIndex) = new Array[Split](0)
- bins(featureIndex) = new Array[Bin](0)
}
- }
+ // For ordered features, bins correspond to feature values.
+ // For unordered categorical features, there is no need to
construct the bins.
+ // since there is a one-to-one correspondence between the
splits and the bins.
+ bins(featureIndex) = new Array[Bin](0)
+ }
--- End diff --
Do you mean to move the closing brace 2 spaces ahead?
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