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#ifndef __PUSubtractor__
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#define __PUSubtractor__
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#include <vector>
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#include "fastjet/PseudoJet.hh"
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#include "fastjet/ClusterSequence.hh"
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#include "fastjet/ClusterSequenceArea.hh"
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#include "fastjet/ActiveAreaSpec.hh"
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#include "FWCore/Framework/interface/Event.h"
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#include "FWCore/Framework/interface/EventSetup.h"
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#include "FWCore/ParameterSet/interface/ParameterSet.h"
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#include "DataFormats/JetReco/interface/CaloJet.h"
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#include "DataFormats/HcalDetId/interface/HcalDetId.h"
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#include "DataFormats/Candidate/interface/CandidateFwd.h"
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#include "Geometry/CaloGeometry/interface/CaloGeometry.h"
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class PileUpSubtractor{
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public:
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typedef boost::shared_ptr<fastjet::ClusterSequence> ClusterSequencePtr;
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typedef boost::shared_ptr<fastjet::ActiveAreaSpec> ActiveAreaSpecPtr;
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typedef boost::shared_ptr<fastjet::RangeDefinition> RangeDefPtr;
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PileUpSubtractor(const edm::ParameterSet& iConfig);
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~PileUpSubtractor(){;}
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virtual void setAlgorithm(ClusterSequencePtr& algorithm);
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virtual void reset(std::vector<edm::Ptr<reco::Candidate> >& input,
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std::vector<fastjet::PseudoJet>& towers,
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std::vector<fastjet::PseudoJet>& output);
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virtual void setupGeometryMap(edm::Event& iEvent,const edm::EventSetup& iSetup);
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virtual void calculatePedestal(std::vector<fastjet::PseudoJet> const & coll);
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virtual void subtractPedestal(std::vector<fastjet::PseudoJet> & coll);
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virtual void calculateOrphanInput(std::vector<fastjet::PseudoJet> & orphanInput);
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virtual void offsetCorrectJets();
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virtual double getMeanAtTower(const reco::CandidatePtr & in) const;
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virtual double getSigmaAtTower(const reco::CandidatePtr & in) const;
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virtual double getPileUpAtTower(const reco::CandidatePtr & in) const;
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virtual double getPileUpEnergy(int ijet) const {return jetOffset_[ijet];}
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int ieta(const reco::CandidatePtr & in) const;
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int iphi(const reco::CandidatePtr & in) const;
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protected:
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// From jet producer
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ClusterSequencePtr fjClusterSeq_; // fastjet cluster sequence
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std::vector<edm::Ptr<reco::Candidate> >* inputs_; // input candidates
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std::vector<fastjet::PseudoJet>* fjInputs_; // fastjet inputs
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std::vector<fastjet::PseudoJet>* fjJets_; // fastjet jets
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std::vector<fastjet::PseudoJet> fjOriginalInputs_; // to back-up unsubtracted fastjet inputs
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// PU subtraction parameters
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bool reRunAlgo_;
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bool doAreaFastjet_;
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bool doRhoFastjet_;
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double jetPtMin_;
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double puPtMin_;
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double nSigmaPU_; // number of sigma for pileup
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double radiusPU_; // pileup radius
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ActiveAreaSpecPtr fjActiveArea_; // fastjet active area definition
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RangeDefPtr fjRangeDef_; // range definition
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CaloGeometry const * geo_; // geometry
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int ietamax_; // maximum eta in geometry
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int ietamin_; // minimum eta in geometry
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std::vector<HcalDetId> allgeomid_; // all det ids in the geometry
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std::map<int,int> geomtowers_; // map of geometry towers to det id
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std::map<int,int> ntowersWithJets_; // number of towers with jets
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std::map<int,double> esigma_; // energy sigma
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std::map<int,double> emean_; // energy mean
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std::vector<double> jetOffset_;
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};
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#include "FWCore/PluginManager/interface/PluginFactory.h"
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namespace edm {class ParameterSet; class EventSetup; }
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typedef edmplugin::PluginFactory<PileUpSubtractor *(const edm::ParameterSet & )> PileUpSubtractorFactory;
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#endif
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