The arctan activation function. More...

#include <GActivation.h>

Inheritance diagram for GClasses::GActivationArcTan:

Public Member Functions
virtual double	center ()
	Returns 0. More...

virtual GActivationFunction *	clone ()
	See the comment for GActivationFunction::clone. More...

virtual double	derivative (double x)
	Returns 1/(x*x+1.0) More...

virtual double	halfRange ()
	Returns PI / 2. More...

virtual double	identityBias ()
	Returns 0.0. More...

virtual double	identityDiag ()
	Returns 1.0. More...

virtual double	inverse (double y)
	Returns tan(y), where -PI/2 <= y <= PI/2. More...

virtual const char *	name () const
	Returns the name of this activation function. More...

virtual double	squash (double x)
	Returns atan(x). The result will be in the range -PI/2 <= y <= PI/2. More...

Public Member Functions inherited from GClasses::GActivationFunction
	GActivationFunction ()

virtual	~GActivationFunction ()

virtual double	derivativeOfNet (double net, double activation)
	This computes the derivative of the net value. (Sometimes, such as with GActivationLogistic, it is more efficient to compute this from the activation value, so both are provided.) More...

GDomNode *	serialize (GDom *pDoc) const
	Serialize this object. More...

Additional Inherited Members
Static Public Member Functions inherited from GClasses::GActivationFunction
static GActivationFunction *	deserialize (GDomNode *pNode)
	Deserialize this object. More...