zhengruifeng commented on a change in pull request #25383: [SPARK-13677][ML]
Implement Tree-Based Feature Transformation for ML
URL: https://github.com/apache/spark/pull/25383#discussion_r312688458
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File path:
mllib/src/main/scala/org/apache/spark/ml/regression/DecisionTreeRegressor.scala
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@@ -220,17 +227,23 @@ class DecisionTreeRegressionModel private[ml] (
var predictionColumns = Seq.empty[Column]
if ($(predictionCol).nonEmpty) {
- val predictUDF = udf { (features: Vector) => predict(features) }
+ val predictUDF = udf { vector: Vector => predict(vector) }
Review comment:
to remove the unnecessary brackets, then I rename the var to keep in line
with other places. I am neutral to revert these.
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