Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/22764#discussion_r226384584
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/clustering/BisectingKMeans.scala ---
@@ -310,4 +317,6 @@ class BisectingKMeansSummary private[clustering] (
predictionCol: String,
featuresCol: String,
k: Int,
- numIter: Int) extends ClusteringSummary(predictions, predictionCol,
featuresCol, k, numIter)
+ numIter: Int,
+ @Since("2.4.0") val trainingCost: Double)
--- End diff --
oh wait. If the final goal is to have a consistent ML API in 3.0, do we
have to put this new API in 2.4?
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