C# Class Accord.Neuro.BipolarSigmoidFunction

Inheritance: IActivationFunction, ICloneable

显示文件 Open project: accord-net/framework Class Usage Examples

Public Methods

Method	Description
BipolarSigmoidFunction ( ) : System	Initializes a new instance of the SigmoidFunction class.
BipolarSigmoidFunction ( double alpha ) : System	Initializes a new instance of the BipolarSigmoidFunction class.
Clone ( ) : object	Creates a new object that is a copy of the current instance.
Derivative ( double x ) : double	Calculates function derivative. The method calculates function derivative at point x.
Derivative2 ( double y ) : double	Calculates function derivative. The method calculates the same derivative value as the Derivative method, but it takes not the input x value itself, but the function value, which was calculated previously with the help of Function method. Some applications require as function value, as derivative value, so they can save the amount of calculations using this method to calculate derivative.
Function ( double x ) : double	Calculates function value. The method calculates function value at point x.

Method Details

BipolarSigmoidFunction() public method

Initializes a new instance of the SigmoidFunction class.

public BipolarSigmoidFunction ( ) : System
return	System

BipolarSigmoidFunction() public method

Initializes a new instance of the BipolarSigmoidFunction class.

public BipolarSigmoidFunction ( double alpha ) : System
alpha	double	Sigmoid's alpha value.
return	System

Clone() public method

Creates a new object that is a copy of the current instance.

public Clone ( ) : object
return	object

Derivative() public method

Calculates function derivative.

The method calculates function derivative at point x.

public Derivative ( double x ) : double
x	double	Function input value.
return	double

Derivative2() public method

Calculates function derivative.

The method calculates the same derivative value as the Derivative method, but it takes not the input x value itself, but the function value, which was calculated previously with the help of Function method.

Some applications require as function value, as derivative value, so they can save the amount of calculations using this method to calculate derivative.

public Derivative2 ( double y ) : double
y	double	Function output value - the value, which was obtained /// with the help of method.
return	double

Function() public method

Calculates function value.

The method calculates function value at point x.

public Function ( double x ) : double
x	double	Function input value.
return	double