Github user bgreeven commented on the pull request:
https://github.com/apache/spark/pull/1290#issuecomment-67585200
Addendum: notice that the ANNClassifier.train function has several
instances, and the number of nodes in the hidden layer(s) is quite critical.
Hence I would prefer using:
```
randomWeights(data: RDD[LabeledPoint], hiddenLayersTopology: Array[Int])
```
where hiddenLayersTopology indeed only indicates the nodes in the hidden
layers, as number of input and output nodes are deduced from the data.
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