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Nonlinearity in inputs without activation function layers?

Iuval Clejan
Posted 10 hours ago

I would like to set up a network for which the output has both linear and quadratic terms in the input nodes, but nothing of higher order. So for example Out1=a11 In1+a12 In2+b12 In1 In2. Is this possible with the current infrastructure?
POSTED BY: Iuval Clejan
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A graph like this should do what you want

NetGraph[
 {
  AggregationLayer[Times, 1],
  AppendLayer[],
  LinearLayer[{}]
  },
 {{NetPort["Input"], 1} -> 2 -> 3},
 "Input" -> 2
 ]
  • AggregationLayer is combining the two values using Times
  • AppendLayer is appending the product the the input
  • LinearLayer is learning the linear transformation
POSTED BY: Giulio Alessandrini
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