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// $Id: fermiBaseFunction.h,v 1.1 2005/11/21 19:27:02 anker Exp $
#ifndef BALL_SCORING_COMMON_FERMIBASEFUNCTION_H
#define BALL_SCORING_COMMON_FERMIBASEFUNCTION_H
#include <BALL/SCORING/COMMON/baseFunction.h>
namespace BALL
{
/** Sigmoidal base function
*/
class BALL_EXPORT FermiBaseFunction
: public ScoringBaseFunction
{
public:
///
FermiBaseFunction()
;
/// 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.
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)
;
private:
//_
void computeFermiParameters_()
;
//_
float a_;
//_
float b_;
};
}
#endif // BALL_SCORING_COMMON_FERMIBASEFUNCTION_H
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