class DNN::Layers::Sigmoid
Public Instance Methods
backward_node(dy)
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# File lib/dnn/core/layers/activations.rb, line 11 def backward_node(dy) dy * (1 - @y) * @y end
forward_node(x)
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# File lib/dnn/core/layers/activations.rb, line 7 def forward_node(x) @y = 1 / (1 + Xumo::NMath.exp(-x)) end