Class: DNN::Activations::Tanh

Inherits:
Layer
  • Object
show all
Includes:
Numo
Defined in:
lib/dnn/core/activations.rb

Instance Method Summary collapse

Instance Method Details

#backward(dout) ⇒ Object 



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# File 'lib/dnn/core/activations.rb', line 25

def backward(dout)
  dout * (1.0 / NMath.cosh(@x)**2)
end

#forward(x) ⇒ Object 



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# File 'lib/dnn/core/activations.rb', line 20

def forward(x)
  @x = x
  NMath.tanh(x)
end