Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/8734#discussion_r50617823 --- Diff: mllib/src/test/scala/org/apache/spark/mllib/tree/DecisionTreeSuite.scala --- @@ -331,12 +336,62 @@ class DecisionTreeSuite extends SparkFunSuite with MLlibTestSparkContext { assert(topNode.impurity !== -1.0) // set impurity and predict for child nodes - assert(topNode.leftNode.get.predict.predict === 0.0) - assert(topNode.rightNode.get.predict.predict === 1.0) + if (topNode.leftNode.get.predict.predict === 0.0) { + assert(topNode.rightNode.get.predict.predict === 1.0) + } else { + assert(topNode.leftNode.get.predict.predict === 1.0) + assert(topNode.rightNode.get.predict.predict === 0.0) + } assert(topNode.leftNode.get.impurity === 0.0) assert(topNode.rightNode.get.impurity === 0.0) } + test("Use soft prediction for binary classification with ordered categorical features") { --- End diff -- Hmm, I just want a test case to show it actually order the bins by soft prediction. Although @jkbradley suggested we should use directly `binsToBestSplit`, but in order to do that, we also need to expose many details of `findBestSplits` too, e.g., `binSeqOp`, `getNodeToFeatures` and `partitionAggregates`...etc.
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