SpikeAndDoubleSpikeCleaner Class Reference

#include <SpikeAndDoubleSpikeCleaner.h>

Inheritance diagram for SpikeAndDoubleSpikeCleaner:

Classes
struct	spike_cleaning

Public Member Functions
void	clean (const edm::Handle< reco::PFRecHitCollection > &input, std::vector< bool > &mask)
SpikeAndDoubleSpikeCleaner &	operator= (const SpikeAndDoubleSpikeCleaner &)=delete
	SpikeAndDoubleSpikeCleaner (const edm::ParameterSet &conf)
	SpikeAndDoubleSpikeCleaner (const SpikeAndDoubleSpikeCleaner &)=delete
Public Member Functions inherited from RecHitTopologicalCleanerBase
const std::string &	name () const
RecHitTopologicalCleanerBase &	operator= (const RecHitTopologicalCleanerBase &)=delete
	RecHitTopologicalCleanerBase (const edm::ParameterSet &conf)
	RecHitTopologicalCleanerBase (const RecHitTopologicalCleanerBase &)=delete

Private Attributes
const std::unordered_map < std::string, int >	_layerMap
std::unordered_map< int, spike_cleaning >	_thresholds

Detailed Description

Definition at line 8 of file SpikeAndDoubleSpikeCleaner.h.

Constructor & Destructor Documentation

SpikeAndDoubleSpikeCleaner::SpikeAndDoubleSpikeCleaner

(

const edm::ParameterSet &

conf

)

Definition at line 66 of file SpikeAndDoubleSpikeCleaner.cc.

References PFLayer::ECAL_BARREL, PFLayer::ECAL_ENDCAP, edm::ParameterSet::getParameterSetVector(), PFLayer::HCAL_BARREL1, PFLayer::HCAL_BARREL2, PFLayer::HCAL_ENDCAP, PFLayer::HF_EM, PFLayer::HF_HAD, PFLayer::NONE, PFLayer::PS1, and PFLayer::PS2.

                                                        :
    RecHitTopologicalCleanerBase(conf),
    _layerMap({ {"PS2",(int)PFLayer::PS2},
          {"PS1",(int)PFLayer::PS1},
          {"ECAL_ENDCAP",(int)PFLayer::ECAL_ENDCAP},
          {"ECAL_BARREL",(int)PFLayer::ECAL_BARREL},
          {"NONE",(int)PFLayer::NONE},
          {"HCAL_BARREL1",(int)PFLayer::HCAL_BARREL1},
          {"HCAL_BARREL2_RING0",(int)PFLayer::HCAL_BARREL2},
              // hack to deal with ring1 in HO 
          {"HCAL_BARREL2_RING1",100*(int)PFLayer::HCAL_BARREL2}, 
          {"HCAL_ENDCAP",(int)PFLayer::HCAL_ENDCAP},
          {"HF_EM",(int)PFLayer::HF_EM},
          {"HF_HAD",(int)PFLayer::HF_HAD} }) {

SpikeAndDoubleSpikeCleaner::SpikeAndDoubleSpikeCleaner ( const SpikeAndDoubleSpikeCleaner &  )

delete

Member Function Documentation

void SpikeAndDoubleSpikeCleaner::clean ( const edm::Handle< reco::PFRecHitCollection > &  input, std::vector< bool > &  mask  )

virtual

Implements RecHitTopologicalCleanerBase.

Definition at line 105 of file SpikeAndDoubleSpikeCleaner.cc.

References SpikeAndDoubleSpikeCleaner::spike_cleaning::_doubleSpikeS6S2, SpikeAndDoubleSpikeCleaner::spike_cleaning::_doubleSpikeThresh, SpikeAndDoubleSpikeCleaner::spike_cleaning::_eneThreshMod, SpikeAndDoubleSpikeCleaner::spike_cleaning::_fracThreshMod, SpikeAndDoubleSpikeCleaner::spike_cleaning::_minS4S1_a, SpikeAndDoubleSpikeCleaner::spike_cleaning::_minS4S1_b, SpikeAndDoubleSpikeCleaner::spike_cleaning::_singleSpikeThresh, _thresholds, funct::abs(), PFLayer::ECAL_BARREL, reco::PFRecHit::energy(), PFLayer::HCAL_BARREL2, i, edm::Ref< C, T, F >::key(), reco::PFRecHit::layer(), min(), reco::PFRecHit::neighbours4(), and reco::PFRecHit::positionREP().

                              {
  //need to run over energy sorted rechits
  std::vector<std::pair<unsigned,double> > ordered_hits;
  for( unsigned i = 0; i < input->size(); ++i ) {
    std::pair<unsigned,double> val = std::make_pair(i,input->at(i).energy());
    auto pos = std::upper_bound(ordered_hits.begin(),ordered_hits.end(),
                val, greaterByEnergy);
    ordered_hits.insert(pos,val);
  }  

  for( const auto& idx_e : ordered_hits ) {
    const unsigned i = idx_e.first;
    if( !mask[i] ) continue; // don't need to re-mask things :-)
    const reco::PFRecHit& rechit = input->at(i);
    int hitlayer = (int)rechit.layer();
    if( hitlayer == PFLayer::HCAL_BARREL2 && 
    std::abs(rechit.positionREP().eta()) > 0.34 ) {
      hitlayer *= 100;
    }    
    const spike_cleaning& clean = _thresholds.find(hitlayer)->second;    
    if( rechit.energy() < clean._singleSpikeThresh ) continue;
    const double rhenergy = rechit.energy();
    // single spike cleaning
    const reco::PFRecHitRefVector& neighbours4 = rechit.neighbours4();
    double surroundingEnergy = rechit.energy();
    double neighbourEnergy = 0.0;
    double layerEnergy = 0.0;
    for( const reco::PFRecHitRef& neighbour : neighbours4 ) {
      if( !mask[neighbour.key()] ) continue;
      const double sum = neighbour->energy(); //energyUp is just rechit energy?
      surroundingEnergy += sum;
      neighbourEnergy   += sum;
      layerEnergy       += neighbour->energy();
    }    
    //   wannaBeSeed.energyUp()/wannaBeSeed.energy() : 1.;
    // Fraction 1 is the balance between the hit and its neighbours 
    // from both layers
    const double fraction1 = surroundingEnergy/rhenergy;    
    // removed spurious comments from old pfcluster algo... 
    // look there if you want more history
    const double f1Cut = ( clean._minS4S1_a*std::log10(rechit.energy()) + 
               clean._minS4S1_b );
    if( fraction1 < f1Cut ) { 
      const double eta = rechit.positionREP().eta();
      const double aeta = std::abs(eta);
      const double phi = rechit.positionREP().phi();
      std::pair<double,double> dcr = dCrack(phi,eta);
      const double dcrmin = ( rechit.layer() ==  PFLayer::ECAL_BARREL ? 
                  std::min(dcr.first,dcr.second):
                  dcr.second );
      if( aeta < 5.0 && 
      ( (aeta < 2.85 && dcrmin > 1.0) || 
        (rhenergy > clean._eneThreshMod*clean._singleSpikeThresh && 
         fraction1 < f1Cut/clean._fracThreshMod ) ) ) { 
    mask[i] = false;
      }
    }//if initial fraction cut (single spike)
    // double spike removal
    if( mask[i] && rhenergy > clean._doubleSpikeThresh ) {
      //Determine energy surrounding the seed and the most energetic neighbour
      double surroundingEnergyi = 0.0;      
      double enmax = -999.0;
      reco::PFRecHitRef mostEnergeticNeighbour;
      const reco::PFRecHitRefVector& neighbours4i = rechit.neighbours4();
      for( reco::PFRecHitRef neighbour : neighbours4i ) {
    if( !mask[neighbour.key()] ) continue;
    const double nenergy = neighbour->energy();
    surroundingEnergyi += nenergy;
    if( nenergy > enmax ) {
      enmax = nenergy;
      mostEnergeticNeighbour = neighbour;
    }
      }
      // is there an energetic neighbour
      if( enmax > 0.0 ) {
    double surroundingEnergyj = 0.0;
    const reco::PFRecHitRefVector& neighbours4j = 
      mostEnergeticNeighbour->neighbours4();
    for( const reco::PFRecHitRef& neighbour : neighbours4j ) {
      //if( !mask[neighbour] &&  neighbour != i) continue; // leave out?
      surroundingEnergyj += neighbour->energy();
    }
    // The energy surrounding the double spike candidate 
    const double surroundingEnergyFraction = 
      (surroundingEnergyi+surroundingEnergyj) / 
      (rechit.energy()+mostEnergeticNeighbour->energy()) - 1.;
    if ( surroundingEnergyFraction < clean._doubleSpikeS6S2 ) { 
      const double eta = rechit.positionREP().eta();
      const double aeta = std::abs(eta);
      const double phi = rechit.positionREP().phi();
      std::pair<double,double> dcr = dCrack(phi,eta);
      const double dcrmin = ( rechit.layer() == PFLayer::ECAL_BARREL ? 
                  std::min(dcr.first,dcr.second):
                  dcr.second );
      if( aeta < 5.0 && 
          ( (aeta < 2.85 && dcrmin > 1.0) || 
        (rhenergy > clean._eneThreshMod*clean._doubleSpikeThresh && 
         surroundingEnergyFraction < clean._doubleSpikeS6S2/clean._fracThreshMod ) 
        ) ) {       
        mask[i] = false;
        mask[mostEnergeticNeighbour.key()] = false;
      }
    }
      } // was there an energetic neighbour ? 
    }// if double spike thresh
  } // rechit loop
}

SpikeAndDoubleSpikeCleaner& SpikeAndDoubleSpikeCleaner::operator= ( const SpikeAndDoubleSpikeCleaner &  )

delete

Member Data Documentation

const std::unordered_map<std::string,int> SpikeAndDoubleSpikeCleaner::_layerMap

private

Definition at line 29 of file SpikeAndDoubleSpikeCleaner.h.

Referenced by for().

std::unordered_map<int,spike_cleaning> SpikeAndDoubleSpikeCleaner::_thresholds

private

Definition at line 30 of file SpikeAndDoubleSpikeCleaner.h.

Referenced by clean(), and for().