#include <BALL/SCORING/COMMON/fermiBaseFunction.h>

Inheritance diagram for BALL::FermiBaseFunction:

Public Member Functions
	FermiBaseFunction ()

	FermiBaseFunction (float lower, float upper)

void	setLower (float lower)

void	setUpper (float upper)

float	calculate (float x) const

float	calculate (float x, float lower, float upper)

Public Member Functions inherited from BALL::ScoringBaseFunction
	ScoringBaseFunction ()

	ScoringBaseFunction (float lower, float upper)

virtual	~ScoringBaseFunction ()

Private Member Functions
void	computeFermiParameters_ ()

Private Attributes
float	a_

float	b_

Additional Inherited Members
Public Types inherited from BALL::ScoringBaseFunction
enum	BaseFunctionType { BASE_FUNCTION_TYPE__LINEAR, BASE_FUNCTION_TYPE__FERMI }

Protected Attributes inherited from BALL::ScoringBaseFunction
float	lower_

float	upper_

Detailed Description

Sigmoidal base function

Definition at line 13 of file fermiBaseFunction.h.

Constructor & Destructor Documentation

BALL::FermiBaseFunction::FermiBaseFunction ( )

BALL::FermiBaseFunction::FermiBaseFunction	(	float	lower,
		float	upper
	)

The function is defined in such a way that the score approaches 1 for values < lower and 0 for values > upper. If you need contrary behaviour, you have to supply a "lower" which is greater than "upper". This will invert the function.