Github user NarineK commented on a diff in the pull request: https://github.com/apache/spark/pull/9667#discussion_r48998009 --- Diff: mllib/src/main/scala/org/apache/spark/mllib/optimization/GradientDescent.scala --- @@ -122,8 +122,8 @@ class GradientDescent private[spark] (private var gradient: Gradient, private va * @return solution vector */ @DeveloperApi - def optimize(data: RDD[(Double, Vector)], initialWeights: Vector): Vector = { - val (weights, _) = GradientDescent.runMiniBatchSGD( + def optimize(data: RDD[(Double, Vector)], initialWeights: Vector): (Vector, Double, Integer) = { --- End diff -- sure, I can add a new method optimizeWithStats. How about if the optimizeWithStats returns an Object OptimizeStats which contains all those 3 fields? @jkbradley Later OptimizeStats can be extended ...
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