LeastSquares Class Reference

#include <LossFunctions.h>

Inheritance diagram for LeastSquares:

Public Member Functions
Double_t	fit (std::vector< emtf::Event * > &v)
int	id ()
	LeastSquares ()
std::string	name ()
Double_t	target (emtf::Event *e)
	~LeastSquares ()

Detailed Description

Definition at line 37 of file LossFunctions.h.

Constructor & Destructor Documentation

LeastSquares::LeastSquares ( )

inline

Definition at line 40 of file LossFunctions.h.

{}

LeastSquares::~LeastSquares ( )

inline

Definition at line 41 of file LossFunctions.h.

{}

Member Function Documentation

Double_t LeastSquares::fit ( std::vector< emtf::Event * > &  v )

inlinevirtual

Implements L1TLossFunction.

Definition at line 49 of file LossFunctions.h.

References MillePedeFileConverter_cfg::e, mps_fire::i, emtf::Event::predictedValue, SUM, and emtf::Event::trueValue.

Referenced by trackingPlots.Iteration::modules().

  {
    // The average of the residuals minmizes the Loss Function for LS.
    
    Double_t SUM = 0;
    for(unsigned int i=0; i<v.size(); i++)
      {
        emtf::Event* e = v[i];
    SUM += e->trueValue - e->predictedValue;
      }
    
    return SUM/v.size();
  }

int LeastSquares::id ( void  )

inlinevirtual

Implements L1TLossFunction.

Definition at line 63 of file LossFunctions.h.

{ return 1; }

std::string LeastSquares::name ( void  )

inlinevirtual

Implements L1TLossFunction.

Definition at line 62 of file LossFunctions.h.

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

{ return "Least_Squares"; }

Double_t LeastSquares::target ( emtf::Event *  e )

inlinevirtual

Implements L1TLossFunction.

Definition at line 43 of file LossFunctions.h.

References emtf::Event::predictedValue, and emtf::Event::trueValue.

  {
    // Each tree fits the residuals when using LeastSquares.
    return e->trueValue - e->predictedValue;
  }