emtf::PercentErrorSquared Class Reference

#include <LossFunctions.h>

Inheritance diagram for emtf::PercentErrorSquared:

Public Member Functions
double	fit (std::vector< Event *> &v) override
int	id () override
std::string	name () override
	PercentErrorSquared ()
double	target (Event *e) override
	~PercentErrorSquared () override
Public Member Functions inherited from emtf::LossFunction
virtual	~LossFunction ()=default

Detailed Description

Definition at line 176 of file LossFunctions.h.

Constructor & Destructor Documentation

PercentErrorSquared()

emtf::PercentErrorSquared::PercentErrorSquared ( )

inline

Definition at line 178 of file LossFunctions.h.

{}

~PercentErrorSquared()

emtf::PercentErrorSquared::~PercentErrorSquared ( )

inlineoverride

Definition at line 179 of file LossFunctions.h.

{}

Member Function Documentation

fit()

double emtf::PercentErrorSquared::fit ( std::vector< Event *> &  v )

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 186 of file LossFunctions.h.

References MillePedeFileConverter_cfg::e, mps_fire::i, and findQualityFiles::v.

Referenced by trackingPlots.Iteration::modules().

                                              {
      // The average of the weighted residuals minimizes the squared percent error.
      // Weight(i) = 1/true(i)^2.

      double SUMtop = 0;
      double SUMbottom = 0;

      for (unsigned int i = 0; i < v.size(); i++) {
        Event* e = v[i];
        SUMtop += (e->trueValue - e->predictedValue) / (e->trueValue * e->trueValue);
        SUMbottom += 1 / (e->trueValue * e->trueValue);
      }

      return SUMtop / SUMbottom;
    }

id()

int emtf::PercentErrorSquared::id ( void  )

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 202 of file LossFunctions.h.

{ return 4; }

name()

std::string emtf::PercentErrorSquared::name ( void  )

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 201 of file LossFunctions.h.

Referenced by config.CFG::__str__(), validation.Sample::digest(), and VIDSelectorBase.VIDSelectorBase::initialize().

{ return "Percent_Error"; }

target()

double emtf::PercentErrorSquared::target ( Event *  e )

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 181 of file LossFunctions.h.

References MillePedeFileConverter_cfg::e.

                                     {
      // The gradient of the squared percent error.
      return (e->trueValue - e->predictedValue) / (e->trueValue * e->trueValue);
    }