#include <RecoJets/FFTJetProducers/plugins/FFTJetPFPileupCleaner.cc>

Inheritance diagram for FFTJetPFPileupCleaner:

Public Member Functions
	FFTJetPFPileupCleaner (const edm::ParameterSet &)

	~FFTJetPFPileupCleaner ()

Public Member Functions inherited from edm::EDProducer
	EDProducer ()

virtual	~EDProducer ()

Public Member Functions inherited from edm::ProducerBase
	ProducerBase ()

void	registerProducts (ProducerBase , ProductRegistry , ModuleDescription const &)

std::function< void(BranchDescription const &)>	registrationCallback () const
	used by the fwk to register list of products More...

virtual	~ProducerBase ()

Public Member Functions inherited from edm::EDConsumerBase
	EDConsumerBase ()

ProductHolderIndex	indexFrom (EDGetToken, BranchType, TypeID const &) const

void	itemsMayGet (BranchType, std::vector< ProductHolderIndex > &) const

void	itemsToGet (BranchType, std::vector< ProductHolderIndex > &) const

void	labelsForToken (EDGetToken iToken, Labels &oLabels) const

void	updateLookup (BranchType iBranchType, ProductHolderIndexHelper const &)

virtual	~EDConsumerBase ()

Protected Member Functions
void	beginJob ()

void	endJob ()

void	produce (edm::Event &, const edm::EventSetup &)

Protected Member Functions inherited from edm::EDProducer
CurrentProcessingContext const *	currentContext () const

Protected Member Functions inherited from edm::ProducerBase
void	callWhenNewProductsRegistered (std::function< void(BranchDescription const &)> const &func)

Protected Member Functions inherited from edm::EDConsumerBase
template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	consumes (edm::InputTag const &tag)

EDGetToken	consumes (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	consumes (TypeToGet const &id, edm::InputTag const &tag)

ConsumesCollector	consumesCollector ()
	Use a ConsumesCollector to gather consumes information from helper functions. More...

template<typename ProductType , BranchType B = InEvent>
void	consumesMany ()

void	consumesMany (const TypeToGet &id)

template<BranchType B>
void	consumesMany (const TypeToGet &id)

template<typename ProductType , BranchType B = InEvent>
EDGetTokenT< ProductType >	mayConsume (edm::InputTag const &tag)

EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

template<BranchType B>
EDGetToken	mayConsume (const TypeToGet &id, edm::InputTag const &tag)

Private Member Functions
void	buildRemovalMask ()

	FFTJetPFPileupCleaner ()

	FFTJetPFPileupCleaner (const FFTJetPFPileupCleaner &)

reco::VertexRef	findSomeVertexWFakes (const edm::Handle< reco::VertexCollection > &vertices, const edm::Handle< reco::VertexCollection > &fakeVertices, const reco::PFCandidate &pfcand, bool *fromFakeSet) const

bool	isAcceptableVtx (reco::VertexCollection::const_iterator iv) const

bool	isRemovable (reco::PFCandidate::ParticleType ptype) const

FFTJetPFPileupCleaner &	operator= (const FFTJetPFPileupCleaner &)

void	setRemovalBit (reco::PFCandidate::ParticleType ptype, bool onOff)

Private Attributes
bool	checkClosestZVertex

double	etaMax

double	etaMin

edm::InputTag	FakePrimaryVertices

bool	keepIfPVneighbor

edm::InputTag	PFCandidates

unsigned	removalMask

bool	remove_e

bool	remove_egamma_HF

bool	remove_gamma

bool	remove_h

bool	remove_h0

bool	remove_h_HF

bool	remove_mu

bool	remove_X

bool	removeMainVertex

bool	removeUnassociated

bool	reverseRemovalDecision

bool	useFakePrimaryVertex

double	vertexNdofCut

double	vertexZmaxCut

edm::InputTag	Vertices

std::vector< std::pair< double, unsigned > >	zAssoc

Additional Inherited Members
Public Types inherited from edm::EDProducer
typedef EDProducer	ModuleType

typedef WorkerT< EDProducer >	WorkerType

Public Types inherited from edm::ProducerBase
typedef ProductRegistryHelper::TypeLabelList	TypeLabelList

Static Public Member Functions inherited from edm::EDProducer
static const std::string &	baseType ()

static void	fillDescriptions (ConfigurationDescriptions &descriptions)

static void	prevalidate (ConfigurationDescriptions &descriptions)

Detailed Description

Description: cleans up a collection of partice flow objects

Implementation: [Notes on implementation]

Definition at line 46 of file FFTJetPFPileupCleaner.cc.

Constructor & Destructor Documentation

FFTJetPFPileupCleaner::FFTJetPFPileupCleaner ( const edm::ParameterSet & ps )

explicit

Definition at line 134 of file FFTJetPFPileupCleaner.cc.

References buildRemovalMask().

     : init_param(edm::InputTag, PFCandidates),
       init_param(edm::InputTag, Vertices),
       init_param(edm::InputTag, FakePrimaryVertices),
       init_param(bool, useFakePrimaryVertex),
       init_param(bool, checkClosestZVertex),
       init_param(bool, keepIfPVneighbor),
       init_param(bool, removeMainVertex),
       init_param(bool, removeUnassociated),
       init_param(bool, reverseRemovalDecision),
       init_param(bool, remove_X        ),
       init_param(bool, remove_h        ),
       init_param(bool, remove_e        ),
       init_param(bool, remove_mu       ),
       init_param(bool, remove_gamma    ),
       init_param(bool, remove_h0       ),
       init_param(bool, remove_h_HF     ),
       init_param(bool, remove_egamma_HF),
       removalMask(0),
        init_param(double, etaMin),
       init_param(double, etaMax),
       init_param(double, vertexNdofCut),
       init_param(double, vertexZmaxCut)
 {
     buildRemovalMask();
     produces<reco::PFCandidateCollection>();
 }

FFTJetPFPileupCleaner::~FFTJetPFPileupCleaner ( )

Definition at line 163 of file FFTJetPFPileupCleaner.cc.

164 {

165 }

FFTJetPFPileupCleaner::FFTJetPFPileupCleaner ( )

private

FFTJetPFPileupCleaner::FFTJetPFPileupCleaner ( const FFTJetPFPileupCleaner & )

private

Member Function Documentation

void FFTJetPFPileupCleaner::beginJob ( void )

protectedvirtual

Reimplemented from edm::EDProducer.

Definition at line 501 of file FFTJetPFPileupCleaner.cc.

502 {

503 }

void FFTJetPFPileupCleaner::buildRemovalMask ( )

private

Definition at line 487 of file FFTJetPFPileupCleaner.cc.

References reco::PFCandidate::e, reco::PFCandidate::egamma_HF, reco::PFCandidate::gamma, reco::PFCandidate::h, reco::PFCandidate::h0, reco::PFCandidate::h_HF, reco::PFCandidate::mu, remove_e, remove_egamma_HF, remove_gamma, remove_h, remove_h0, remove_h_HF, remove_mu, remove_X, setRemovalBit(), and reco::PFCandidate::X.

Referenced by FFTJetPFPileupCleaner().

 {
     setRemovalBit(reco::PFCandidate::X,         remove_X        );
     setRemovalBit(reco::PFCandidate::h,         remove_h        );
     setRemovalBit(reco::PFCandidate::e,         remove_e        );
     setRemovalBit(reco::PFCandidate::mu,        remove_mu       );
     setRemovalBit(reco::PFCandidate::gamma,     remove_gamma    );
     setRemovalBit(reco::PFCandidate::h0,        remove_h0       );
     setRemovalBit(reco::PFCandidate::h_HF,      remove_h_HF     );
     setRemovalBit(reco::PFCandidate::egamma_HF, remove_egamma_HF);
 }

void FFTJetPFPileupCleaner::endJob ( void )

protectedvirtual

Reimplemented from edm::EDProducer.

Definition at line 507 of file FFTJetPFPileupCleaner.cc.

508 {

509 }

reco::VertexRef FFTJetPFPileupCleaner::findSomeVertexWFakes	(	const edm::Handle< reco::VertexCollection > &	vertices,
		const edm::Handle< reco::VertexCollection > &	fakeVertices,
		const reco::PFCandidate &	pfcand,
		bool *	fromFakeSet
	)		const

private

Definition at line 282 of file FFTJetPFPileupCleaner.cc.

References abs, checkClosestZVertex, first, getHLTprescales::index, isAcceptableVtx(), keepIfPVneighbor, python.multivaluedict::sort(), reco::PFCandidate::trackRef(), reco::Vertex::tracks_begin(), reco::Vertex::tracks_end(), reco::Vertex::trackWeight(), useFakePrimaryVertex, reco::PFCandidate::vertex(), w(), detailsBasic3DVector::z, and zAssoc.

Referenced by produce().

 {
     typedef reco::VertexCollection::const_iterator IV;
     typedef reco::Vertex::trackRef_iterator IT;
 
     *fromFakeSet = false;
     reco::TrackBaseRef trackBaseRef(pfcand.trackRef());
 
     size_t iVertex = 0;
     unsigned nFoundVertex = 0;
     const IV vertend(vertices->end());
 
     {
         unsigned index = 0;
         double bestweight = 0.0;
         for (IV iv=vertices->begin(); iv!=vertend; ++iv, ++index)
             if (isAcceptableVtx(iv))
             {
                 const reco::Vertex& vtx = *iv;
 
                 // loop on tracks in vertices
                 IT trackend(vtx.tracks_end());
                 for (IT iTrack=vtx.tracks_begin(); iTrack!=trackend; ++iTrack)
                 {
                     const reco::TrackBaseRef& baseRef = *iTrack;
 
                     // one of the tracks in the vertex is the same as 
                     // the track considered in the function
                     if (baseRef == trackBaseRef)
                     {
                         // select the vertex for which the track has the highest weight
                         const double w = vtx.trackWeight(baseRef);
                         if (w > bestweight)
                         {
                             bestweight=w;
                             iVertex=index;
                             nFoundVertex++;
                         }   
                     }
                 }
             }
     }
 
     if (nFoundVertex > 0)
     {
         if (nFoundVertex != 1)
             edm::LogWarning("TrackOnTwoVertex")
                 << "a track is shared by at least two vertices. "
                 << "Used to be an assert";
 
         // Check if we can re-associate this track with one
         // of the fake vertices
         if (useFakePrimaryVertex)
         {
             const double ztrack = pfcand.vertex().z();
             double dzmin = std::abs(ztrack - ((*vertices)[iVertex]).z());
 
             const IV fakeEnd(fakeVertices->end());
             unsigned index = 0;
             for (IV iv=fakeVertices->begin(); iv!=fakeEnd; ++iv, ++index)
                 if (isAcceptableVtx(iv))
                 {
                     const double dz = std::abs(ztrack - iv->z());
                     if (dz < dzmin)
                     {
                         dzmin = dz; 
                         iVertex = index;
                         *fromFakeSet = true;
                     }
                 }
         }
 
         return reco::VertexRef(*fromFakeSet ? fakeVertices : vertices, iVertex);
     }
 
     // optional: as a secondary solution, associate the closest vertex in z
     if (checkClosestZVertex) 
     {
         const double ztrack = pfcand.vertex().z();
         bool foundVertex = false;
 
         if (keepIfPVneighbor)
         {
             // Sort all vertices according to their Z coordinate
             zAssoc.clear();
             unsigned index = 0;
             for (IV iv=vertices->begin(); iv!=vertend; ++iv, ++index)
                 if (isAcceptableVtx(iv))
                     zAssoc.push_back(std::pair<double,unsigned>(iv->z(), index));
             const unsigned numRealVertices = index;
 
             // Mix the fake vertex collection into zAssoc.
             // Note that we do not reset "index" before doing this.
             if (useFakePrimaryVertex)
             {
                 const IV fakeEnd(fakeVertices->end());
                 for (IV iv=fakeVertices->begin(); iv!=fakeEnd; ++iv, ++index)
                     if (isAcceptableVtx(iv))
                         zAssoc.push_back(std::pair<double,unsigned>(iv->z(), index));
             }
 
             // Check where the track z position fits into this sequence
             if (!zAssoc.empty())
             {
                 std::sort(zAssoc.begin(), zAssoc.end());
                 std::pair<double,unsigned> tPair(ztrack, UINT_MAX);
                 const unsigned iAbove = std::upper_bound(
                     zAssoc.begin(), zAssoc.end(), tPair) - zAssoc.begin();
 
                 // Check whether one of the vertices with indices
                 // iAbove or (iAbove - 1) is a primary vertex.
                 // If so, return it. Otherwise return the one
                 // with closest distance to the track.
                 unsigned ich[2] = {0U, 0U};
                 unsigned nch = 1;
                 if (iAbove)
                 {
                     ich[0] = iAbove - 1U;
                     ich[1] = iAbove;
                     if (iAbove < zAssoc.size())
                         nch = 2;
                 }
 
                 double dzmin = 1.0e100;
                 unsigned bestVertexNum = UINT_MAX;
                 for (unsigned icheck=0; icheck<nch; ++icheck)
                 {
                     const unsigned zAssocIndex = ich[icheck];
                     const unsigned vertexNum = zAssoc[zAssocIndex].second;
 
                     if (vertexNum == numRealVertices || 
                         (!useFakePrimaryVertex && vertexNum == 0U))
                     {
                         bestVertexNum = vertexNum;
                         break;
                     }
 
                     const double dz = std::abs(ztrack - zAssoc[zAssocIndex].first);
                     if (dz < dzmin)
                     {
                         dzmin = dz; 
                         bestVertexNum = vertexNum;
                     }
                 }
 
                 foundVertex = bestVertexNum < UINT_MAX;
                 if (foundVertex)
                 {
                     iVertex = bestVertexNum;
                     if (iVertex >= numRealVertices)
                     {
                         *fromFakeSet = true;
                         iVertex -= numRealVertices;
                     }
                 }
             }
         }
         else
         {
             // This is a simple association algorithm (from PFPileUp)
             // extended to take fake vertices into account
             double dzmin = 1.0e100;
             unsigned index = 0;
             for (IV iv=vertices->begin(); iv!=vertend; ++iv, ++index)
                 if (isAcceptableVtx(iv))
                 {
                     const double dz = std::abs(ztrack - iv->z());
                     if (dz < dzmin)
                     {
                         dzmin = dz; 
                         iVertex = index;
                         foundVertex = true;
                     }
                 }
 
             if (useFakePrimaryVertex)
             {
                 const IV fakeEnd(fakeVertices->end());
                 index = 0;
                 for (IV iv=fakeVertices->begin(); iv!=fakeEnd; ++iv, ++index)
                     if (isAcceptableVtx(iv))
                     {
                         const double dz = std::abs(ztrack - iv->z());
                         if (dz < dzmin)
                         {
                             dzmin = dz; 
                             iVertex = index;
                             *fromFakeSet = true;
                             foundVertex = true;
                        }
                     }
             }
         }
 
         if (foundVertex) 
             return reco::VertexRef(*fromFakeSet ? fakeVertices : vertices, iVertex);
     }
 
     return reco::VertexRef();
 }

bool FFTJetPFPileupCleaner::isAcceptableVtx ( reco::VertexCollection::const_iterator iv ) const

private

Definition at line 168 of file FFTJetPFPileupCleaner.cc.

References abs, vertexNdofCut, and vertexZmaxCut.

Referenced by findSomeVertexWFakes().

 {
     return !iv->isFake() &&
             static_cast<double>(iv->ndof()) > vertexNdofCut &&
             std::abs(iv->z()) < vertexZmaxCut;
 }

bool FFTJetPFPileupCleaner::isRemovable ( reco::PFCandidate::ParticleType ptype ) const

private

Definition at line 257 of file FFTJetPFPileupCleaner.cc.

References removalMask, and edm::shift.

Referenced by produce().

 {
     const unsigned shift = static_cast<unsigned>(ptype);
     assert(shift < 32U);
     return removalMask & (1U << shift);
 }

FFTJetPFPileupCleaner& FFTJetPFPileupCleaner::operator= ( const FFTJetPFPileupCleaner & )

private

void FFTJetPFPileupCleaner::produce	(	edm::Event &	iEvent,
		const edm::EventSetup &	iSetup
	)

protectedvirtual

Implements edm::EDProducer.

Definition at line 178 of file FFTJetPFPileupCleaner.cc.

References eta(), etaMax, FakePrimaryVertices, findSomeVertexWFakes(), edm::Event::getByLabel(), i, edm::Ref< C, T, F >::isNull(), isRemovable(), edm::HandleBase::isValid(), edm::Ref< C, T, F >::key(), reco::tau::pfCandidates(), PFCandidates, edm::Event::put(), removeMainVertex, removeUnassociated, reverseRemovalDecision, reco::PFCandidate::setSourceCandidatePtr(), useFakePrimaryVertex, and Vertices.

 {
     // get PFCandidates
     std::auto_ptr<reco::PFCandidateCollection> 
         pOutput(new reco::PFCandidateCollection);
 
     edm::Handle<reco::PFCandidateCollection> pfCandidates;
     iEvent.getByLabel(PFCandidates, pfCandidates);
 
     // get vertices
     edm::Handle<reco::VertexCollection> vertices;
     iEvent.getByLabel(Vertices, vertices);
 
     edm::Handle<reco::VertexCollection> fakeVertices;
     if (useFakePrimaryVertex)
     {
         iEvent.getByLabel(FakePrimaryVertices, fakeVertices);
         if (!fakeVertices.isValid())
             throw cms::Exception("FFTJetBadConfig")
                 << "ERROR in FFTJetPFPileupCleaner:"
                 " could not find fake vertices"
                 << std::endl;
     }
 
     const unsigned ncand = pfCandidates->size();
     for (unsigned i=0; i<ncand; ++i)
     {
         reco::PFCandidatePtr candptr(pfCandidates, i);
         bool remove = false;
 
         if (isRemovable(candptr->particleId()))
         {
             bool fromFakeSet = false;
             reco::VertexRef vertexref(findSomeVertexWFakes(vertices, fakeVertices,
                                                            *candptr, &fromFakeSet));
             if (vertexref.isNull())
             {
                 // Track is not associated with any vertex 
                 // in any of the vertex sets
                 remove = removeUnassociated;
             }
             else if (vertexref.key() == 0 && 
                      (!useFakePrimaryVertex || fromFakeSet))
             {
                 // Track is associated with the main primary vertex
                 // However, if we are using fake vertices, this only
                 // matters if the vertex comes from the fake set. If
                 // it comes from the real set, remove the track anyway
                 // because in the combined set the associated vertex
                 // would not be the main primary vertex.
                 remove = removeMainVertex;
             }
             else
                 remove = true;
         }
 
         // Check the eta range
         if (!remove)
         {
             const double eta = candptr->p4().Eta();
             remove = eta < etaMin || eta > etaMax;
         }
 
         // Should we remember this candidate?
         if (reverseRemovalDecision)
             remove = !remove;
         if (!remove)
         {
             const reco::PFCandidate& cand = (*pfCandidates)[i];
             pOutput->push_back(cand);
             pOutput->back().setSourceCandidatePtr(candptr);
         }
     }
 
     iEvent.put(pOutput);
 }

void FFTJetPFPileupCleaner::setRemovalBit	(	reco::PFCandidate::ParticleType	ptype,
		bool	onOff
	)

private

Definition at line 266 of file FFTJetPFPileupCleaner.cc.

References removalMask, and edm::shift.

Referenced by buildRemovalMask().

 {
     const unsigned shift = static_cast<unsigned>(ptype);
     assert(shift < 32U);
     const unsigned mask = (1U << shift);
     if (value)
         removalMask |= mask;
     else
         removalMask &= ~mask;
 }