class NEAT::BasicNeuronTypes::SigmoidNeuron

The most commonly-used neuron for the hidden and output layers. We use the Logistic Function for the Sigmoid.

Public Instance Methods

express(instance) click to toggle source

create a function on the instance with our name that sums all inputs and produce a sigmoid output (using tanh)

# File lib/rubyneat/neuron.rb, line 111
def express(instance)
  instance.define_singleton_method(@name) {|*inputs|
    1.0 / (1.0 + exp(-4.9 * inputs.reduce {|p, q| p + q}))
  }
end