Github user mengxr commented on a diff in the pull request:
https://github.com/apache/spark/pull/1673#discussion_r15667925
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/tree/DecisionTree.scala ---
@@ -42,8 +42,8 @@ class DecisionTree (private val strategy: Strategy)
extends Serializable with Lo
/**
* Method to train a decision tree model over an RDD
- * @param input RDD of
[[org.apache.spark.mllib.regression.LabeledPoint]] used as training data
- * @return a DecisionTreeModel that can be used for prediction
+ * @param input Training data: RDD of
[[org.apache.spark.mllib.regression.LabeledPoint]]
+ * @return DecisionTreeModel which can be used for prediction
--- End diff --
`that` should be correct, and if you want to use `which`, it should be
`DecisionTreeModel, which ...` (comma before `which`).
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