Github user jkbradley commented on a diff in the pull request:
https://github.com/apache/spark/pull/13076#discussion_r63452941
--- Diff:
mllib/src/main/scala/org/apache/spark/ml/classification/MultilayerPerceptronClassifier.scala
---
@@ -204,16 +238,26 @@ class MultilayerPerceptronClassifier @Since("1.5.0") (
val labels = myLayers.last
val lpData = extractLabeledPoints(dataset)
val data = lpData.map(lp => LabelConverter.encodeLabeledPoint(lp,
labels))
- val topology = FeedForwardTopology.multiLayerPerceptron(myLayers, true)
+ val topology = FeedForwardTopology.multiLayerPerceptron(myLayers,
softmaxOnTop = true)
val trainer = new FeedForwardTrainer(topology, myLayers(0),
myLayers.last)
- if (isDefined(weights)) {
- trainer.setWeights($(weights))
+ if (isDefined(initialWeights)) {
+ trainer.setWeights($(initialWeights))
} else {
trainer.setSeed($(seed))
}
- trainer.LBFGSOptimizer
- .setConvergenceTol($(tol))
- .setNumIterations($(maxIter))
+ if ($(solver) == MultilayerPerceptronClassifier.LBFGS) {
+ trainer.LBFGSOptimizer
+ .setConvergenceTol($(tol))
+ .setNumIterations($(maxIter))
+ } else if ($(solver) == MultilayerPerceptronClassifier.GD) {
+ trainer.SGDOptimizer
+ .setNumIterations($(maxIter))
+ .setConvergenceTol($(tol))
+ .setStepSize($(stepSize))
+ } else {
+ throw new UnsupportedOperationException(
--- End diff --
IllegalArgumentException
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