Class: DNN::Activations::Sigmoid

Inherits:

Layer

Object
DNN::Activations::Sigmoid

show all

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 11

def backward(dout)
  dout * (1 - @out) * @out
end

#forward(x) ⇒ `Object`



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# File 'lib/dnn/core/activations.rb', line 7

def forward(x)
  @out = 1 / (1 + NMath.exp(-x))
end