Github user wangmiao1981 commented on a diff in the pull request:
https://github.com/apache/spark/pull/16767#discussion_r98969396
--- Diff: R/pkg/vignettes/sparkr-vignettes.Rmd ---
@@ -561,7 +563,7 @@ summary(model)
#### Multilayer Perceptron
-Multilayer perceptron classifier (MLPC) is a classifier based on the
[feedforward artificial neural
network](https://en.wikipedia.org/wiki/Feedforward_neural_network). MLPC
consists of multiple layers of nodes. Each layer is fully connected to the next
layer in the network. Nodes in the input layer represent the input data. All
other nodes map inputs to outputs by a linear combination of the inputs with
the nodeâs weights $w$ and bias $b$ and applying an activation function. This
can be written in matrix form for MLPC with $K+1$ layers as follows:
+Multilayer perceptron classifier (MLPC) is a classifier based on the
[feedforward artificial neural
network](https://en.wikipedia.org/wiki/Feedforward_neural_network). MLPC
consists of multiple layers of nodes. Each layer is fully connected to the next
layer in the network. Nodes in the input layer represent the input data. All
other nodes map inputs to outputs by a linear combination of the inputs with
the node???s weights $w$ and bias $b$ and applying an activation function. This
can be written in matrix form for MLPC with $K+1$ layers as follows:
--- End diff --
I don't see the change here either.
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