Github user imatiach-msft commented on a diff in the pull request:
https://github.com/apache/spark/pull/16355#discussion_r93475036
--- Diff:
mllib/src/main/scala/org/apache/spark/mllib/clustering/BisectingKMeans.scala ---
@@ -339,10 +339,14 @@ private object BisectingKMeans extends Serializable {
assignments.map { case (index, v) =>
if (divisibleIndices.contains(index)) {
val children = Seq(leftChildIndex(index), rightChildIndex(index))
- val selected = children.minBy { child =>
- KMeans.fastSquaredDistance(newClusterCenters(child), v)
+ if (children.length > 0) {
--- End diff --
I added a filter on whether new cluster centers contains the children.
Would you be able to send me a sample dataset so I can validate the fix? Thank
you!
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