Github user mgaido91 commented on a diff in the pull request:
https://github.com/apache/spark/pull/19340#discussion_r140859569
--- Diff: mllib/src/main/scala/org/apache/spark/ml/clustering/KMeans.scala
---
@@ -71,6 +71,15 @@ private[clustering] trait KMeansParams extends Params
with HasMaxIter with HasFe
@Since("1.5.0")
def getInitMode: String = $(initMode)
+ @Since("2.3.0")
+ final val distanceMeasure = new Param[String](this, "distanceMeasure",
"The distance measure. " +
--- End diff --
This would be hard for two main reasons:
1 - as I will explain later, even though theoretically we would need only
a function, in practice this is not true for performance reasons;
2 - saving and loading a module would be much harder (I'm not sure it
would even be feasible).
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