class CooCoo::ActivationFunctions::Logistic
Public Instance Methods
call(x)
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# File lib/coo-coo/activation_functions.rb, line 93 def call(x) 1.0 / ( 1.0 + (-x).exp) end
derivative(x, y = nil)
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# File lib/coo-coo/activation_functions.rb, line 97 def derivative(x, y = nil) y ||= call(x) y * (1.0 - y) end