Github user imatiach-msft commented on the issue:
https://github.com/apache/spark/pull/16355
@carocat @filousen
Please look at these changes that I updated on December 28:
- val height = math.sqrt(Seq(leftIndex, rightIndex).map { childIndex
=>
+ val indexes = Seq(leftIndex,
rightIndex).filter(clusters.contains(_))
+ val height = math.sqrt(indexes.map { childIndex =>
KMeans.fastSquaredDistance(center, clusters(childIndex).center)
}.max)
- val left = buildSubTree(leftIndex)
- val right = buildSubTree(rightIndex)
- new ClusteringTreeNode(index, size, center, cost, height,
Array(left, right))
+ val children = indexes.map(buildSubTree(_)).toArray
+ new ClusteringTreeNode(index, size, center, cost, height,
children)
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