GClasses
|
The logistic activation function. More...
#include <GActivation.h>
Public Member Functions | |
virtual const char * | name () |
Returns the name of this activation function. | |
virtual double | squash (double x) |
The logistic function. Returns 1.0/(e^(-x)+1.0) | |
virtual double | derivative (double x) |
Returns d*(1.0-d), where d=squash(x) | |
virtual double | inverse (double y) |
The logit function. Returns log(y)-log(1.0-y) | |
virtual double | derivativeOfNet (double net, double activation) |
Returns y*(1.0-y) | |
virtual double | center () |
Returns 0.5. | |
virtual double | halfRange () |
Returns 0.5. | |
virtual GActivationFunction * | clone () |
See the comment for GActivationFunction::clone. |
The logistic activation function.
virtual double GClasses::GActivationLogistic::center | ( | ) | [inline, virtual] |
Returns 0.5.
Implements GClasses::GActivationFunction.
virtual GActivationFunction* GClasses::GActivationLogistic::clone | ( | ) | [inline, virtual] |
See the comment for GActivationFunction::clone.
Implements GClasses::GActivationFunction.
virtual double GClasses::GActivationLogistic::derivative | ( | double | x | ) | [inline, virtual] |
Returns d*(1.0-d), where d=squash(x)
Implements GClasses::GActivationFunction.
virtual double GClasses::GActivationLogistic::derivativeOfNet | ( | double | net, |
double | activation | ||
) | [inline, virtual] |
Returns y*(1.0-y)
Reimplemented from GClasses::GActivationFunction.
virtual double GClasses::GActivationLogistic::halfRange | ( | ) | [inline, virtual] |
Returns 0.5.
Implements GClasses::GActivationFunction.
virtual double GClasses::GActivationLogistic::inverse | ( | double | y | ) | [inline, virtual] |
The logit function. Returns log(y)-log(1.0-y)
Implements GClasses::GActivationFunction.
virtual const char* GClasses::GActivationLogistic::name | ( | ) | [inline, virtual] |
Returns the name of this activation function.
Implements GClasses::GActivationFunction.
virtual double GClasses::GActivationLogistic::squash | ( | double | x | ) | [inline, virtual] |
The logistic function. Returns 1.0/(e^(-x)+1.0)
Implements GClasses::GActivationFunction.