Class: NN::Sigmoid

Inherits:

Object

Object
NN::Sigmoid

show all

Defined in:: lib/nn.rb

Instance Method Summary collapse

Instance Method Details

#backward(dout) ⇒ `Object`



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# File 'lib/nn.rb', line 309

def backward(dout)
  dout * (1.0 - @out) * @out
end

#forward(x) ⇒ `Object`



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# File 'lib/nn.rb', line 305

def forward(x)
  @out = 1.0 / (1 + Numo::NMath.exp(-x))
end