FsmwModeFinder3d Class Reference

#include <FsmwModeFinder3d.h>

Inheritance diagram for FsmwModeFinder3d:

Public Member Functions
FsmwModeFinder3d *	clone () const override
	FsmwModeFinder3d (float fraction=.5, float weightExponent=-2., float cutoff=10, int no_weights_above=10)
GlobalPoint	operator() (const std::vector< PointAndDistance > &) const override
Public Member Functions inherited from ModeFinder3d
virtual	~ModeFinder3d ()

Private Attributes
float	theCutoff
float	theFraction
int	theNoWeightsAbove
float	theWeightExponent

Additional Inherited Members
Public Types inherited from ModeFinder3d
typedef std::pair< GlobalPoint, float >	PointAndDistance

Detailed Description

this is a half sample mode finder that works coordinate wise, in 3d.

Definition at line 12 of file FsmwModeFinder3d.h.

Constructor & Destructor Documentation

FsmwModeFinder3d()

FsmwModeFinder3d::FsmwModeFinder3d	(	float	fraction = .5,
		float	weightExp = -2.,
		float	cutoff = 10,
		int	no_w_a = 10
	)

Constructor

Parameters

fraction	the fraction of data points that have to be within the interval.
weightExponent	The exponent by which the weights are taken into account. Default is "w^-1", w being the track distance + cutoff (see below).
cutoff	weight = ( cutoff + 10000 * distance ) * weightExponent
no_weights_above	ignore weights as long as the number of data points is > x

Half sample mode in 3d, as a functional class.

Definition at line 10 of file FsmwModeFinder3d.cc.

    : theFraction(fraction), theWeightExponent(weightExp), theCutoff(cutoff), theNoWeightsAbove(no_w_a) {
  assert(theFraction > 0. && theFraction < 1.);
}

References cms::cuda::assert(), and theFraction.

Referenced by clone().

Member Function Documentation

clone()

FsmwModeFinder3d * FsmwModeFinder3d::clone ( void  ) const

overridevirtual

Implements ModeFinder3d.

Definition at line 50 of file FsmwModeFinder3d.cc.

{ return new FsmwModeFinder3d(*this); }

References FsmwModeFinder3d().

operator()()

GlobalPoint FsmwModeFinder3d::operator() ( const std::vector< PointAndDistance > &  values ) const

overridevirtual

Implements ModeFinder3d.

Definition at line 15 of file FsmwModeFinder3d.cc.

                                                                                        {
  typedef Cluster1D<void> SimpleCluster;
  std::vector<SimpleCluster> vx, vy, vz;
  vx.reserve(values.size() - 1);
  vy.reserve(values.size() - 1);
  vz.reserve(values.size() - 1);
  std::vector<const void*> emptyvec;
 
  for (std::vector<PointAndDistance>::const_iterator i = values.begin(); i != values.end(); ++i) {
    float weight = 1.;
    if (static_cast<int>(values.size()) < theNoWeightsAbove) {
      // compute weights if we have fewer than theNoWeightsAbove
      // data points
      weight = pow(theCutoff + 10000 * i->second, theWeightExponent);
    };
 
    SimpleCluster tmp_x(Measurement1D(i->first.x(), 1.0), emptyvec, weight);
    SimpleCluster tmp_y(Measurement1D(i->first.y(), 1.0), emptyvec, weight);
    SimpleCluster tmp_z(Measurement1D(i->first.z(), 1.0), emptyvec, weight);
    vx.push_back(tmp_x);
    vy.push_back(tmp_y);
    vz.push_back(tmp_z);
  };
 
  FsmwClusterizer1D<void> algo(theFraction);
  std::vector<SimpleCluster> cresx = algo(vx).first;
  std::vector<SimpleCluster> cresy = algo(vy).first;
  std::vector<SimpleCluster> cresz = algo(vz).first;
  assert(!cresx.empty() && !cresy.empty() && !cresz.empty());
 
  GlobalPoint ret(
      cresx.begin()->position().value(), cresy.begin()->position().value(), cresz.begin()->position().value());
  return ret;
}

References cms::cuda::assert(), mps_fire::i, funct::pow(), runTheMatrix::ret, theCutoff, theFraction, theNoWeightsAbove, theWeightExponent, contentValuesCheck::values, and mps_merge::weight.

Member Data Documentation

theCutoff

float FsmwModeFinder3d::theCutoff

private

Definition at line 36 of file FsmwModeFinder3d.h.

Referenced by operator()().

theFraction

float FsmwModeFinder3d::theFraction

private

Definition at line 34 of file FsmwModeFinder3d.h.

Referenced by FsmwModeFinder3d(), and operator()().

theNoWeightsAbove

int FsmwModeFinder3d::theNoWeightsAbove

private

Definition at line 37 of file FsmwModeFinder3d.h.

Referenced by operator()().

theWeightExponent

float FsmwModeFinder3d::theWeightExponent

private

Definition at line 35 of file FsmwModeFinder3d.h.

Referenced by operator()().