class DNN::Layers::Sigmoid

Public Instance Methods

backward_node(dy) click to toggle source
# File lib/dnn/core/layers/activations.rb, line 11
def backward_node(dy)
  dy * (1 - @y) * @y
end
forward_node(x) click to toggle source
# File lib/dnn/core/layers/activations.rb, line 7
def forward_node(x)
  @y = 1 / (1 + Xumo::NMath.exp(-x))
end