public static double CommonDerivate(double x, double gain, double center) { double y; if (gain == 1) { double fx = SigmoidFunction.CommonActivation(x, gain, center); y = fx * (1 - fx); } else { double xc = x - center; double exp = Math.Exp(-gain * xc); double expP1 = 1 + exp; y = gain * exp / (expP1 * expP1); } return(y); }
public double Derivative(double x, double gain, double center) { return(SigmoidFunction.CommonDerivate(x, gain, center)); }
public double Activation(double x, double gain, double center) { return(SigmoidFunction.CommonActivation(x, gain, center)); }