EGRegressionModifierV3 Class Reference

Inheritance diagram for EGRegressionModifierV3:

Classes
struct	EleRegs
struct	PhoRegs

Public Member Functions
	EGRegressionModifierV3 (const edm::ParameterSet &conf, edm::ConsumesCollector &cc)
void	modifyObject (pat::Electron &) const final
void	modifyObject (pat::Photon &) const final
void	modifyObject (reco::GsfElectron &) const final
void	modifyObject (reco::Photon &) const final
void	setEvent (const edm::Event &) final
void	setEventContent (const edm::EventSetup &) final
	~EGRegressionModifierV3 () override
Public Member Functions inherited from ModifyObjectValueBase
virtual void	modifyObject (pat::Jet &) const
virtual void	modifyObject (pat::Muon &) const
virtual void	modifyObject (pat::Tau &) const
virtual void	modifyObject (reco::BaseTau &) const
virtual void	modifyObject (reco::Jet &) const
virtual void	modifyObject (reco::Muon &) const
	ModifyObjectValueBase (const edm::ParameterSet &conf)
const std::string &	name () const
virtual	~ModifyObjectValueBase ()

Private Member Functions
std::array< float, 32 >	getRegData (const reco::GsfElectron &ele) const
std::array< float, 32 >	getRegData (const reco::Photon &pho) const
void	getSeedCrysCoord (const reco::CaloCluster &clus, int &iEtaOrX, int &iPhiOrY) const

Private Attributes
edm::ESHandle< CaloGeometry >	caloGeomHandle_
std::unique_ptr< EleRegs >	eleRegs_
float	maxRawEnergyForLowPtEBSigma_
float	maxRawEnergyForLowPtEESigma_
std::unique_ptr< PhoRegs >	phoRegs_
edm::EDGetTokenT< double >	rhoToken_
float	rhoValue_
bool	useClosestToCentreSeedCrysDef_

Detailed Description

Definition at line 22 of file EGRegressionModifierV3.cc.

Constructor & Destructor Documentation

EGRegressionModifierV3()

EGRegressionModifierV3::EGRegressionModifierV3	(	const edm::ParameterSet &	conf,
		edm::ConsumesCollector &	cc
	)

Definition at line 71 of file EGRegressionModifierV3.cc.

    : ModifyObjectValueBase(conf),
      rhoValue_(0.),
      rhoToken_(cc.consumes<double>(conf.getParameter<edm::InputTag>("rhoTag"))),
      useClosestToCentreSeedCrysDef_(conf.getParameter<bool>("useClosestToCentreSeedCrysDef")),
      maxRawEnergyForLowPtEBSigma_(conf.getParameter<double>("maxRawEnergyForLowPtEBSigma")),
      maxRawEnergyForLowPtEESigma_(conf.getParameter<double>("maxRawEnergyForLowPtEESigma")) {
  if (conf.exists("eleRegs")) {
    eleRegs_ = std::make_unique<EleRegs>(conf.getParameter<edm::ParameterSet>("eleRegs"));
  }
  if (conf.exists("phoRegs")) {
    phoRegs_ = std::make_unique<PhoRegs>(conf.getParameter<edm::ParameterSet>("phoRegs"));
  }
}

References eleRegs_, edm::ParameterSet::exists(), edm::ParameterSet::getParameter(), and phoRegs_.

~EGRegressionModifierV3()

EGRegressionModifierV3::~EGRegressionModifierV3 ( )

override

Definition at line 86 of file EGRegressionModifierV3.cc.

{}

Member Function Documentation

getRegData() [1/2]

std::array< float, 32 > EGRegressionModifierV3::getRegData ( const reco::GsfElectron &  ele ) const

private

Definition at line 203 of file EGRegressionModifierV3.cc.

                                                                                       {
  std::array<float, 32> data;
 
  const reco::SuperClusterRef& superClus = ele.superCluster();
  const edm::Ptr<reco::CaloCluster>& seedClus = superClus->seed();
 
  const bool isEB = ele.isEB();
  const double rawEnergy = superClus->rawEnergy();
  const double rawESEnergy = superClus->preshowerEnergy();
  const int numberOfClusters = superClus->clusters().size();
  const auto& ssFull5x5 = ele.full5x5_showerShape();
 
  float e5x5Inverse = ssFull5x5.e5x5 != 0. ? vdt::fast_inv(ssFull5x5.e5x5) : 0.;
 
  data[0] = rawEnergy;
  data[1] = superClus->etaWidth();
  data[2] = superClus->phiWidth();
  data[3] = superClus->seed()->energy() / rawEnergy;
  data[4] = ssFull5x5.e5x5 / rawEnergy;
  data[5] = ele.hcalOverEcalBc();
  data[6] = rhoValue_;
  data[7] = seedClus->eta() - superClus->position().Eta();
  data[8] = reco::deltaPhi(seedClus->phi(), superClus->position().Phi());
  data[9] = ssFull5x5.r9;
  data[10] = ssFull5x5.sigmaIetaIeta;
  data[11] = ssFull5x5.sigmaIetaIphi;
  data[12] = ssFull5x5.sigmaIphiIphi;
  data[13] = ssFull5x5.eMax * e5x5Inverse;
  data[14] = ssFull5x5.e2nd * e5x5Inverse;
  data[15] = ssFull5x5.eTop * e5x5Inverse;
  data[16] = ssFull5x5.eBottom * e5x5Inverse;
  data[17] = ssFull5x5.eLeft * e5x5Inverse;
  data[18] = ssFull5x5.eRight * e5x5Inverse;
  data[19] = ssFull5x5.e2x5Max * e5x5Inverse;
  data[20] = ssFull5x5.e2x5Left * e5x5Inverse;
  data[21] = ssFull5x5.e2x5Right * e5x5Inverse;
  data[22] = ssFull5x5.e2x5Top * e5x5Inverse;
  data[23] = ssFull5x5.e2x5Bottom * e5x5Inverse;
  data[24] = ele.nSaturatedXtals();
  data[25] = std::max(0, numberOfClusters);
 
  if (isEB) {
    int iEta, iPhi;
    getSeedCrysCoord(*seedClus, iEta, iPhi);
    int signIEta = iEta > 0 ? +1 : -1;
    data[26] = iEta;
    data[27] = iPhi;
    data[28] = (iEta - signIEta) % 5;
    data[29] = (iPhi - 1) % 2;
    const int iEtaCorr = iEta - (iEta > 0 ? +1 : -1);
    const int iEtaCorr26 = iEta - (iEta > 0 ? +26 : -26);
    data[30] = std::abs(iEta) <= 25 ? iEtaCorr % 20 : iEtaCorr26 % 20;
    data[31] = (iPhi - 1) % 20;
  } else {
    int iX, iY;
    getSeedCrysCoord(*seedClus, iX, iY);
    data[26] = iX;
    data[27] = iY;
    data[28] = rawESEnergy / rawEnergy;
  }
 
  return data;
}

References funct::abs(), data, reco::deltaPhi(), reco::GsfElectron::ShowerShape::e5x5, reco::CaloCluster::eta(), reco::GsfElectron::full5x5_showerShape(), getSeedCrysCoord(), reco::GsfElectron::hcalOverEcalBc(), L1TowerCalibrationProducer_cfi::iEta, reco::GsfElectron::isEB(), SiStripPI::max, reco::GsfElectron::nSaturatedXtals(), reco::CaloCluster::phi(), rhoValue_, and reco::GsfElectron::superCluster().

Referenced by modifyObject().

getRegData() [2/2]

std::array< float, 32 > EGRegressionModifierV3::getRegData ( const reco::Photon &  pho ) const

private

Definition at line 267 of file EGRegressionModifierV3.cc.

                                                                                  {
  std::array<float, 32> data;
 
  const reco::SuperClusterRef& superClus = pho.superCluster();
  const edm::Ptr<reco::CaloCluster>& seedClus = superClus->seed();
 
  const bool isEB = pho.isEB();
  const double rawEnergy = superClus->rawEnergy();
  const double rawESEnergy = superClus->preshowerEnergy();
  const int numberOfClusters = superClus->clusters().size();
  const auto& ssFull5x5 = pho.full5x5_showerShapeVariables();
 
  float e5x5Inverse = ssFull5x5.e5x5 != 0. ? vdt::fast_inv(ssFull5x5.e5x5) : 0.;
 
  data[0] = rawEnergy;
  data[1] = superClus->etaWidth();
  data[2] = superClus->phiWidth();
  data[3] = superClus->seed()->energy() / rawEnergy;
  data[4] = ssFull5x5.e5x5 / rawEnergy;
  //interestingly enough this differs from electrons where it uses cone based
  //naively Sam would have thought using cone based is even worse than tower based
  data[5] = pho.hadronicOverEm();
  data[6] = rhoValue_;
  data[7] = seedClus->eta() - superClus->position().Eta();
  data[8] = reco::deltaPhi(seedClus->phi(), superClus->position().Phi());
  data[9] = pho.full5x5_r9();
  data[10] = ssFull5x5.sigmaIetaIeta;
  //interestingly sigmaIEtaIPhi differs in defination here from
  //electron & sc definations of sigmaIEtaIPhi
  data[11] = ssFull5x5.sigmaIetaIphi;
  data[12] = ssFull5x5.sigmaIphiIphi;
  data[13] = ssFull5x5.maxEnergyXtal * e5x5Inverse;
  data[14] = ssFull5x5.e2nd * e5x5Inverse;
  data[15] = ssFull5x5.eTop * e5x5Inverse;
  data[16] = ssFull5x5.eBottom * e5x5Inverse;
  data[17] = ssFull5x5.eLeft * e5x5Inverse;
  data[18] = ssFull5x5.eRight * e5x5Inverse;
  data[19] = ssFull5x5.e2x5Max * e5x5Inverse;
  data[20] = ssFull5x5.e2x5Left * e5x5Inverse;
  data[21] = ssFull5x5.e2x5Right * e5x5Inverse;
  data[22] = ssFull5x5.e2x5Top * e5x5Inverse;
  data[23] = ssFull5x5.e2x5Bottom * e5x5Inverse;
  data[24] = pho.nSaturatedXtals();
  data[25] = std::max(0, numberOfClusters);
 
  if (isEB) {
    int iEta, iPhi;
    getSeedCrysCoord(*seedClus, iEta, iPhi);
    data[26] = iEta;
    data[27] = iPhi;
    int signIEta = iEta > 0 ? +1 : -1;
    data[28] = (iEta - signIEta) % 5;
    data[29] = (iPhi - 1) % 2;
    const int iEtaCorr = iEta - (iEta > 0 ? +1 : -1);
    const int iEtaCorr26 = iEta - (iEta > 0 ? +26 : -26);
    data[30] = std::abs(iEta) <= 25 ? iEtaCorr % 20 : iEtaCorr26 % 20;
    data[31] = (iPhi - 1) % 20;
  } else {
    int iX, iY;
    getSeedCrysCoord(*seedClus, iX, iY);
    data[26] = iX;
    data[27] = iY;
    data[28] = rawESEnergy / rawEnergy;
  }
 
  return data;
}

References funct::abs(), data, reco::deltaPhi(), reco::Photon::ShowerShape::e5x5, reco::CaloCluster::eta(), reco::Photon::full5x5_r9(), reco::Photon::full5x5_showerShapeVariables(), getSeedCrysCoord(), reco::Photon::hadronicOverEm(), L1TowerCalibrationProducer_cfi::iEta, reco::Photon::isEB(), SiStripPI::max, reco::Photon::nSaturatedXtals(), reco::CaloCluster::phi(), rhoValue_, and reco::Photon::superCluster().

getSeedCrysCoord()

void EGRegressionModifierV3::getSeedCrysCoord ( const reco::CaloCluster &  clus, int &  iEtaOrX, int &  iPhiOrY  ) const

private

Definition at line 335 of file EGRegressionModifierV3.cc.

                                                                                                           {
  iEtaOrX = 0;
  iPhiOrY = 0;
 
  const bool isEB = clus.seed().subdetId() == EcalBarrel;
 
  if (useClosestToCentreSeedCrysDef_) {
    float dummy;
    if (isEB) {
      egammaTools::localEcalClusterCoordsEB(clus, *caloGeomHandle_, dummy, dummy, iEtaOrX, iPhiOrY, dummy, dummy);
    } else {
      egammaTools::localEcalClusterCoordsEE(clus, *caloGeomHandle_, dummy, dummy, iEtaOrX, iPhiOrY, dummy, dummy);
    }
  } else {
    if (isEB) {
      const EBDetId ebId(clus.seed());
      iEtaOrX = ebId.ieta();
      iPhiOrY = ebId.iphi();
    } else {
      const EEDetId eeId(clus.seed());
      iEtaOrX = eeId.ix();
      iPhiOrY = eeId.iy();
    }
  }
}

References caloGeomHandle_, EcalBarrel, EBDetId::ieta(), EEDetId::ix(), egammaTools::localEcalClusterCoordsEB(), egammaTools::localEcalClusterCoordsEE(), reco::CaloCluster::seed(), DetId::subdetId(), and useClosestToCentreSeedCrysDef_.

Referenced by getRegData().

modifyObject() [1/4]

void EGRegressionModifierV3::modifyObject ( pat::Electron &  ele ) const

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 156 of file EGRegressionModifierV3.cc.

                                                                {
  modifyObject(static_cast<reco::GsfElectron&>(ele));
}

References modifyObject().

modifyObject() [2/4]

void EGRegressionModifierV3::modifyObject ( pat::Photon &  pho ) const

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 201 of file EGRegressionModifierV3.cc.

{ modifyObject(static_cast<reco::Photon&>(pho)); }

References modifyObject().

modifyObject() [3/4]

void EGRegressionModifierV3::modifyObject ( reco::GsfElectron &  ele ) const

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 103 of file EGRegressionModifierV3.cc.

                                                                    {
  //check if we have specified an electron regression correction and
  //return the object unmodified if so
  if (!eleRegs_)
    return;
 
  const reco::SuperClusterRef& superClus = ele.superCluster();
 
  // skip HGCAL for now
  if (superClus->seed()->seed().det() == DetId::Forward)
    return;
 
  // do not apply corrections in case of missing info (slimmed MiniAOD electrons)
  if (!superClus->clusters().isAvailable())
    return;
 
  //check if fbrem is filled as its needed for E/p combination so abort if its set to the default value
  //this will be the case for <5 (or current cuts) for miniAOD electrons
  if (ele.fbrem() == reco::GsfElectron::ClassificationVariables::kDefaultValue)
    return;
 
  auto regData = getRegData(ele);
  const float rawEnergy = superClus->rawEnergy();
  const float rawESEnergy = superClus->preshowerEnergy();
  //bug here, it should include the ES, kept for backwards compat
  const float rawEt = rawEnergy * superClus->position().rho() / superClus->position().r();
  const bool isSaturated = ele.nSaturatedXtals() != 0;
 
  const float ecalMean = eleRegs_->ecalOnlyMean(rawEt, ele.isEB(), isSaturated, regData.data());
  const float ecalMeanCorr = ecalMean > 0. ? ecalMean : 1.0;
  //as the sample is trained flat in pt, the regression's only source of very high energy
  //electrons is in the high endcap and therefore it gives a very poor resolution estimate
  //to any electrons with this energy, regardless of their actual eta
  //hence this lovely hack
  if (ele.isEB() && maxRawEnergyForLowPtEBSigma_ >= 0 && eleRegs_->ecalOnlySigma.useLowEtBin(rawEt, isSaturated)) {
    regData[0] = std::min(regData[0], maxRawEnergyForLowPtEBSigma_);
  }
  if (!ele.isEB() && maxRawEnergyForLowPtEESigma_ >= 0 && eleRegs_->ecalOnlySigma.useLowEtBin(rawEt, isSaturated)) {
    regData[0] = std::min(regData[0], maxRawEnergyForLowPtEESigma_);
  }
  const float ecalSigma = eleRegs_->ecalOnlySigma(rawEt, ele.isEB(), isSaturated, regData.data());
 
  const float corrEnergy = (rawEnergy + rawESEnergy) * ecalMeanCorr;
  const float corrEnergyErr = corrEnergy * ecalSigma;
 
  ele.setCorrectedEcalEnergy(corrEnergy);
  ele.setCorrectedEcalEnergyError(corrEnergyErr);
 
  std::pair<float, float> combEnergyAndErr = eleRegs_->epComb.combine(ele);
  const math::XYZTLorentzVector newP4 = ele.p4() * combEnergyAndErr.first / ele.p4().t();
  ele.correctMomentum(newP4, ele.trackMomentumError(), combEnergyAndErr.second);
}

References reco::GsfElectron::correctMomentum(), eleRegs_, reco::GsfElectron::fbrem(), DetId::Forward, getRegData(), edm::Ref< C, T, F >::isAvailable(), reco::GsfElectron::isEB(), CastorSimpleRecAlgoImpl::isSaturated(), reco::GsfElectron::ClassificationVariables::kDefaultValue, maxRawEnergyForLowPtEBSigma_, maxRawEnergyForLowPtEESigma_, min(), reco::GsfElectron::nSaturatedXtals(), reco::GsfElectron::p4(), reco::GsfElectron::setCorrectedEcalEnergy(), reco::GsfElectron::setCorrectedEcalEnergyError(), reco::GsfElectron::superCluster(), and reco::GsfElectron::trackMomentumError().

Referenced by modifyObject().

modifyObject() [4/4]

void EGRegressionModifierV3::modifyObject ( reco::Photon &  pho ) const

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 160 of file EGRegressionModifierV3.cc.

                                                               {
  //check if we have specified an photon regression correction and
  //return the object unmodified if so
  if (!phoRegs_)
    return;
 
  const reco::SuperClusterRef& superClus = pho.superCluster();
 
  // skip HGCAL for now
  if (superClus->seed()->seed().det() == DetId::Forward)
    return;
 
  // do not apply corrections in case of missing info (happens for some slimmed MiniAOD photons)
  if (!superClus->clusters().isAvailable())
    return;
 
  auto regData = getRegData(pho);
 
  const float rawEnergy = superClus->rawEnergy();
  const float rawESEnergy = superClus->preshowerEnergy();
  //bug here, it should include the ES, kept for backwards compat
  const float rawEt = rawEnergy * superClus->position().rho() / superClus->position().r();
  const bool isSaturated = pho.nSaturatedXtals();
  const float ecalMean = phoRegs_->ecalOnlyMean(rawEt, pho.isEB(), isSaturated, regData.data());
  const float ecalMeanCorr = ecalMean > 0. ? ecalMean : 1.0;
 
  //see the electrons for explaination of this lovely feature
  if (pho.isEB() && maxRawEnergyForLowPtEBSigma_ >= 0 && phoRegs_->ecalOnlySigma.useLowEtBin(rawEt, isSaturated)) {
    regData[0] = std::min(regData[0], maxRawEnergyForLowPtEBSigma_);
  }
  if (!pho.isEB() && maxRawEnergyForLowPtEESigma_ >= 0 && phoRegs_->ecalOnlySigma.useLowEtBin(rawEt, isSaturated)) {
    regData[0] = std::min(regData[0], maxRawEnergyForLowPtEESigma_);
  }
  const float ecalSigma = phoRegs_->ecalOnlySigma(rawEt, pho.isEB(), isSaturated, regData.data());
 
  const double corrEnergy = (rawEnergy + rawESEnergy) * ecalMeanCorr;
  const double corrEnergyErr = corrEnergy * ecalSigma;
 
  pho.setCorrectedEnergy(reco::Photon::P4type::regression2, corrEnergy, corrEnergyErr, true);
}

References DetId::Forward, getRegData(), edm::Ref< C, T, F >::isAvailable(), reco::Photon::isEB(), CastorSimpleRecAlgoImpl::isSaturated(), maxRawEnergyForLowPtEBSigma_, maxRawEnergyForLowPtEESigma_, min(), reco::Photon::nSaturatedXtals(), phoRegs_, reco::Photon::setCorrectedEnergy(), and reco::Photon::superCluster().

setEvent()

void EGRegressionModifierV3::setEvent ( const edm::Event &  evt )

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 88 of file EGRegressionModifierV3.cc.

                                                         {
  edm::Handle<double> rhoHandle;
  evt.getByToken(rhoToken_, rhoHandle);
  rhoValue_ = *rhoHandle;
}

References edm::Event::getByToken(), rhoToken_, and rhoValue_.

setEventContent()

void EGRegressionModifierV3::setEventContent ( const edm::EventSetup &  iSetup )

finalvirtual

Reimplemented from ModifyObjectValueBase.

Definition at line 94 of file EGRegressionModifierV3.cc.

                                                                        {
  if (eleRegs_)
    eleRegs_->setEventContent(iSetup);
  if (phoRegs_)
    phoRegs_->setEventContent(iSetup);
  if (useClosestToCentreSeedCrysDef_)
    iSetup.get<CaloGeometryRecord>().get(caloGeomHandle_);
}

References caloGeomHandle_, eleRegs_, edm::EventSetup::get(), get, phoRegs_, and useClosestToCentreSeedCrysDef_.

Member Data Documentation

caloGeomHandle_

edm::ESHandle<CaloGeometry> EGRegressionModifierV3::caloGeomHandle_

private

Definition at line 66 of file EGRegressionModifierV3.cc.

Referenced by getSeedCrysCoord(), and setEventContent().

eleRegs_

std::unique_ptr<EleRegs> EGRegressionModifierV3::eleRegs_

private

Definition at line 57 of file EGRegressionModifierV3.cc.

Referenced by EGRegressionModifierV3(), modifyObject(), and setEventContent().

maxRawEnergyForLowPtEBSigma_

float EGRegressionModifierV3::maxRawEnergyForLowPtEBSigma_

private

Definition at line 64 of file EGRegressionModifierV3.cc.

Referenced by modifyObject().

maxRawEnergyForLowPtEESigma_

float EGRegressionModifierV3::maxRawEnergyForLowPtEESigma_

private

Definition at line 65 of file EGRegressionModifierV3.cc.

Referenced by modifyObject().

phoRegs_

std::unique_ptr<PhoRegs> EGRegressionModifierV3::phoRegs_

private

Definition at line 58 of file EGRegressionModifierV3.cc.

Referenced by EGRegressionModifierV3(), modifyObject(), and setEventContent().

rhoToken_

edm::EDGetTokenT<double> EGRegressionModifierV3::rhoToken_

private

Definition at line 61 of file EGRegressionModifierV3.cc.

Referenced by setEvent().

rhoValue_

float EGRegressionModifierV3::rhoValue_

private

Definition at line 60 of file EGRegressionModifierV3.cc.

Referenced by getRegData(), and setEvent().

useClosestToCentreSeedCrysDef_

bool EGRegressionModifierV3::useClosestToCentreSeedCrysDef_

private

Definition at line 63 of file EGRegressionModifierV3.cc.

Referenced by getSeedCrysCoord(), and setEventContent().