emtf::AbsoluteDeviation Class Reference

#include <LossFunctions.h>

Inheritance diagram for emtf::AbsoluteDeviation:

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

Detailed Description

Definition at line 68 of file LossFunctions.h.

Constructor & Destructor Documentation

emtf::AbsoluteDeviation::AbsoluteDeviation ( )

inline

Definition at line 70 of file LossFunctions.h.

{}

emtf::AbsoluteDeviation::~AbsoluteDeviation ( )

inlineoverride

Definition at line 71 of file LossFunctions.h.

{}

Member Function Documentation

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

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 81 of file LossFunctions.h.

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

Referenced by trackingPlots.Iteration::modules().

                                              {
      // The median of the residuals minimizes absolute deviation.
      if (v.empty())
        return 0;
      std::vector<double> residuals(v.size());

      // Load the residuals into a vector.
      for (unsigned int i = 0; i < v.size(); i++) {
        Event* e = v[i];
        residuals[i] = (e->trueValue - e->predictedValue);
      }

      // Get the median and return it.
      int median_loc = (residuals.size() - 1) / 2;

      // Odd.
      if (residuals.size() % 2 != 0) {
        std::nth_element(residuals.begin(), residuals.begin() + median_loc, residuals.end());
        return residuals[median_loc];
      }

      // Even.
      else {
        std::nth_element(residuals.begin(), residuals.begin() + median_loc, residuals.end());
        double low = residuals[median_loc];
        std::nth_element(residuals.begin() + median_loc + 1, residuals.begin() + median_loc + 1, residuals.end());
        double high = residuals[median_loc + 1];
        return (high + low) / 2;
      }
    }

int emtf::AbsoluteDeviation::id ( void  )

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 112 of file LossFunctions.h.

{ return 2; }

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

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 111 of file LossFunctions.h.

Referenced by config.CFG::__str__(), geometryComparison.GeometryComparison::createScript(), validation.Sample::digest(), primaryVertexResolution.PrimaryVertexResolution::getRepMap(), primaryVertexValidation.PrimaryVertexValidation::getRepMap(), zMuMuValidation.ZMuMuValidation::getRepMap(), and VIDSelectorBase.VIDSelectorBase::initialize().

{ return "Absolute_Deviation"; }

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

inlineoverridevirtual

Implements emtf::LossFunction.

Definition at line 73 of file LossFunctions.h.

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

                                     {
      // The gradient.
      if ((e->trueValue - e->predictedValue) >= 0)
        return 1;
      else
        return -1;
    }