Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/21119#discussion_r184838848
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/clustering/PowerIterationClustering.scala
---
@@ -97,13 +97,15 @@ private[clustering] trait
PowerIterationClusteringParams extends Params with Has
def getNeighborsCol: String = $(neighborsCol)
/**
- * Param for the name of the input column for neighbors in the adjacency
list representation.
+ * Param for the name of the input column for non-negative weights
(similarities) of edges
+ * between the vertex in `idCol` and each neighbor in `neighborsCol`.
--- End diff --
Good catch!
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