class CooCoo::ActivationFunctions::Logistic

Public Instance Methods

call(x) click to toggle source
# File lib/coo-coo/activation_functions.rb, line 93
def call(x)
  1.0 / ( 1.0 + (-x).exp)
end
derivative(x, y = nil) click to toggle source
# File lib/coo-coo/activation_functions.rb, line 97
def derivative(x, y = nil)
  y ||= call(x)
  y * (1.0 - y)
end