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#include <KalmanAlignmentTrackRefitter.h>
This class serves the very specific needs of the KalmanAlignmentAlgorithm. Tracks are partially refitted to 'tracklets' using the current estimate on the alignment (see class CurrentAlignmentKFUpdator. These tracklets are either used to compute an exteranal estimate for other tracklets or are handed to the alignment algorithm for further processing. If a tracklet is used as an external prediction or for further processing is defined via the configuration file. NOTE: The trajectory measurements of the tracklets are always ordered along the direction of the momentum!
Definition at line 31 of file KalmanAlignmentTrackRefitter.h.
| typedef std::vector< KalmanAlignmentSetup* > KalmanAlignmentTrackRefitter::AlignmentSetupCollection |
Definition at line 37 of file KalmanAlignmentTrackRefitter.h.
Definition at line 46 of file KalmanAlignmentTrackRefitter.h.
| typedef AlignmentAlgorithmBase::ConstTrajTrackPairCollection KalmanAlignmentTrackRefitter::ConstTrajTrackPairCollection |
Definition at line 47 of file KalmanAlignmentTrackRefitter.h.
Definition at line 40 of file KalmanAlignmentTrackRefitter.h.
Definition at line 38 of file KalmanAlignmentTrackRefitter.h.
| typedef std::vector< TrackletPtr > KalmanAlignmentTrackRefitter::TrackletCollection |
Definition at line 44 of file KalmanAlignmentTrackRefitter.h.
Definition at line 43 of file KalmanAlignmentTrackRefitter.h.
| typedef KalmanAlignmentTracklet::TrajTrackPairCollection KalmanAlignmentTrackRefitter::TrajTrackPairCollection |
Definition at line 42 of file KalmanAlignmentTrackRefitter.h.
| KalmanAlignmentTrackRefitter::KalmanAlignmentTrackRefitter | ( | const edm::ParameterSet & | config, |
| AlignableNavigator * | navigator | ||
| ) |
Constructor.
Definition at line 27 of file KalmanAlignmentTrackRefitter.cc.
References edm::ParameterSet::getParameter(), TrackProducerBase< reco::Track >::setConf(), and TrackProducerBase< reco::Track >::setSrc().
: theRefitterAlgo( config ), theNavigator( navigator ), theDebugFlag( config.getUntrackedParameter<bool>( "debug", true ) ) { TrackProducerBase< reco::Track >::setConf( config ); TrackProducerBase< reco::Track >::setSrc( config.getParameter< edm::InputTag >( "src" ), config.getParameter< edm::InputTag >( "bsSrc" ) ); }
| KalmanAlignmentTrackRefitter::~KalmanAlignmentTrackRefitter | ( | void | ) |
| void KalmanAlignmentTrackRefitter::debugTrackData | ( | const std::string | identifier, |
| const Trajectory * | traj, | ||
| const reco::Track * | track, | ||
| const reco::BeamSpot * | bs | ||
| ) | [private] |
Definition at line 354 of file KalmanAlignmentTrackRefitter.cc.
References reco::TrackBase::chi2(), reco::TrackBase::dxy(), reco::TrackBase::dz(), ExpressReco_HICollisions_FallBack::e, reco::TrackBase::eta(), KalmanAlignmentDataCollector::fillHistogram(), Trajectory::foundHits(), reco::TrackBase::ndof(), reco::TrackBase::normalizedChi2(), reco::TrackBase::phi(), reco::BeamSpot::position(), reco::TrackBase::pt(), and reco::btau::trackChi2.
Referenced by refitTracks().
{
unsigned int ndof = static_cast<unsigned int>( track->ndof() );
double trackChi2 = track->chi2();
if ( ( trackChi2 > 0. ) && ( ndof > 0 ) )
{
GENFUNCTION cumulativeChi2 = Genfun::CumulativeChiSquare( ndof );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), 1. - cumulativeChi2( trackChi2 ) );
} else if ( ndof == 0 ) {
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), -1. );
} else {
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_CumChi2"), -2. );
}
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_NHits"), traj->foundHits() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Pt"), 1e-2*track->pt() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Eta"), track->eta() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_Phi"), track->phi() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_NormChi2"), track->normalizedChi2() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DZ"), track->dz() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DXY_BS"), fabs( track->dxy( bs->position() ) ) );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_DXY"), fabs( track->dxy() ) );
//KalmanAlignmentDataCollector::fillHistogram( identifier + string("_D0"), fabs( track->d0() ) );
}
| virtual void KalmanAlignmentTrackRefitter::produce | ( | edm::Event & | , |
| const edm::EventSetup & | |||
| ) | [inline, virtual] |
Dummy implementation, due to inheritance from TrackProducerBase.
Implements TrackProducerBase< reco::Track >.
Definition at line 61 of file KalmanAlignmentTrackRefitter.h.
{}
| KalmanAlignmentTrackRefitter::TrajTrackPairCollection KalmanAlignmentTrackRefitter::refitSingleTracklet | ( | const TrackingGeometry * | geometry, |
| const MagneticField * | magneticField, | ||
| const TrajectoryFitter * | fitter, | ||
| const Propagator * | propagator, | ||
| const TransientTrackingRecHitBuilder * | recHitBuilder, | ||
| const reco::TransientTrack & | originalTrack, | ||
| RecHitContainer & | recHits, | ||
| const reco::BeamSpot * | beamSpot, | ||
| const SortingDirection & | sortingDir, | ||
| bool | useExternalEstimate, | ||
| bool | reuseMomentumEstimate, | ||
| const std::string | identifier = std::string("RefitSingle_") |
||
| ) | [private] |
Definition at line 196 of file KalmanAlignmentTrackRefitter.cc.
References anyDirection, edm::OwnVector< T, P >::begin(), TransientTrackingRecHitBuilder::build(), newFWLiteAna::build, TrackProducerAlgorithm< T >::buildTrack(), DeDxDiscriminatorTools::charge(), ExpressReco_HICollisions_FallBack::e, edm::OwnVector< T, P >::end(), KalmanAlignmentDataCollector::fillHistogram(), TrajectoryStateOnSurface::globalParameters(), i, reco::TransientTrack::impactPointState(), TrajectoryStateOnSurface::isValid(), TrajectoryStateOnSurface::localError(), TrajectoryStateOnSurface::localParameters(), PV3DBase< T, PVType, FrameType >::mag(), GlobalTrajectoryParameters::momentum(), LocalTrajectoryParameters::momentum(), PV3DBase< T, PVType, FrameType >::perp(), AnalyticalPropagator::propagate(), Propagator::propagationDirection(), TrajectoryStateOnSurface::rescaleError(), query::result, TrackCandidate::seedRef(), edm::OwnVector< T, P >::size(), sortRecHits(), TrajectoryStateOnSurface::surface(), and theRefitterAlgo.
Referenced by refitTracks().
{
TrajTrackPairCollection result;
if ( recHits.size() < 2 ) return result;
sortRecHits( recHits, recHitBuilder, sortingDir );
TransientTrackingRecHit::RecHitContainer hits;
RecHitContainer::iterator itRecHit;
for ( itRecHit = recHits.begin(); itRecHit != recHits.end(); ++itRecHit )
hits.push_back( recHitBuilder->build( &(*itRecHit) ) );
TransientTrackingRecHit::ConstRecHitPointer firstHit = hits.front();
AnalyticalPropagator firstStatePropagator( magneticField, anyDirection );
TrajectoryStateOnSurface firstState = firstStatePropagator.propagate( fullTrack.impactPointState(), firstHit->det()->surface() );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_IPPt"),
1e-2*fullTrack.impactPointState().globalParameters().momentum().perp() );
if ( !firstState.isValid() ) return result;
// LocalTrajectoryError startError;
// const double startErrorValue = 100;
// const unsigned int nTrajParam = 5;
// if ( useExternalEstimate ) {
// startError = firstState.localError();
// } else {
// if ( reuseMomentumEstimate )
// {
// AlgebraicSymMatrix firstStateError( asHepMatrix( firstState.localError().matrix() ) );
// AlgebraicSymMatrix startErrorMatrix( nTrajParam, 0 );
// startErrorMatrix[0][0] = 1e-10;
// //startErrorMatrix[0][0] = firstStateError[0][0];
// startErrorMatrix[1][1] = startErrorValue;//firstStateError[1][1];
// startErrorMatrix[2][2] = startErrorValue;//firstStateError[2][2];
// startErrorMatrix[3][3] = startErrorValue;
// startErrorMatrix[4][4] = startErrorValue;
// startError = LocalTrajectoryError( startErrorMatrix );
// } else {
// AlgebraicSymMatrix startErrorMatrix( startErrorValue*AlgebraicSymMatrix( nTrajParam, 1 ) );
// startError = LocalTrajectoryError( startErrorMatrix );
// }
// }
// // MOMENTUM ESTIMATE FOR COSMICS. P = 1.5 GeV
// LocalTrajectoryParameters firstStateParameters = firstState.localParameters();
// AlgebraicVector firstStateParamVec = asHepVector( firstStateParameters.mixedFormatVector() );
// firstStateParamVec[0] = 1./1.5;
// LocalTrajectoryParameters cosmicsStateParameters( firstStateParamVec, firstStateParameters.pzSign(), true );
// TrajectoryStateOnSurface tsos( cosmicsStateParameters, startError, firstState.surface(), magneticField );
KalmanAlignmentDataCollector::fillHistogram( identifier + string("_FSPt"),
1e-2*firstState.globalParameters().momentum().perp() );
firstState.rescaleError( 100 );
TrajectoryStateOnSurface tsos( firstState.localParameters(), firstState.localError(),
firstState.surface(), magneticField );
// Generate a trajectory seed.
TrajectorySeed seed( PTrajectoryStateOnDet(), recHits, propagator->propagationDirection() );
// Generate track candidate.
TrajectoryStateTransform stateTransform;
PTrajectoryStateOnDet state = *stateTransform.persistentState( tsos, firstHit->det()->geographicalId().rawId() );
TrackCandidate candidate( recHits, seed, state );
AlgoProductCollection algoResult;
int charge = static_cast<int>( tsos.charge() );
double momentum = firstState.localParameters().momentum().mag();
TransientTrackingRecHit::RecHitPointer testhit =
TRecHit1DMomConstraint::build( charge, momentum, 1e-10, &tsos.surface() );
//no insert in OwnVector...
TransientTrackingRecHit::RecHitContainer tmpHits;
tmpHits.push_back(testhit);
for (TransientTrackingRecHit::RecHitContainer::const_iterator i=hits.begin(); i!=hits.end(); i++){
tmpHits.push_back(*i);
}
hits.swap(tmpHits);
theRefitterAlgo.buildTrack( fitter, propagator, algoResult, hits, tsos, seed, 0, *beamSpot, candidate.seedRef());
for ( AlgoProductCollection::iterator it = algoResult.begin(); it != algoResult.end(); ++it )
result.push_back( make_pair( (*it).first, (*it).second.first ) );
return result;
}
| KalmanAlignmentTrackRefitter::TrackletCollection KalmanAlignmentTrackRefitter::refitTracks | ( | const edm::EventSetup & | eventSetup, |
| const AlignmentSetupCollection & | algoSetups, | ||
| const ConstTrajTrackPairCollection & | tracks, | ||
| const reco::BeamSpot * | beamSpot | ||
| ) |
Definition at line 42 of file KalmanAlignmentTrackRefitter.cc.
References AlignableNavigator::alignableFromDetId(), anyDirection, ExpressReco_HICollisions_FallBack::beamSpot, debugTrackData(), edm::OwnVector< T, P >::empty(), TrackProducerBase< reco::Track >::getFromES(), edm::ESHandle< T >::product(), edm::OwnVector< T, P >::push_back(), refitSingleTracklet(), rejectTrack(), query::result, edm::OwnVector< T, P >::size(), theDebugFlag, theNavigator, and funct::true.
Referenced by KalmanAlignmentAlgorithm::run().
{
// Retrieve what we need from the EventSetup
edm::ESHandle< TrackerGeometry > aGeometry;
edm::ESHandle< MagneticField > aMagneticField;
edm::ESHandle< TrajectoryFitter > aTrajectoryFitter;
edm::ESHandle< Propagator > aPropagator;
edm::ESHandle<MeasurementTracker> theMeasTk;
edm::ESHandle< TransientTrackingRecHitBuilder > aRecHitBuilder;
getFromES( setup, aGeometry, aMagneticField, aTrajectoryFitter, aPropagator, theMeasTk, aRecHitBuilder );
TrackletCollection result;
TrackCollection fullTracks;
ConstTrajTrackPairCollection refittedFullTracks;
ConstTrajTrackPairCollection::const_iterator itTrack;
for( itTrack = tracks.begin(); itTrack != tracks.end(); ++itTrack )
{
TransientTrack fullTrack( *(*itTrack).second, aMagneticField.product() );
AlignmentSetupCollection::const_iterator itSetup;
for ( itSetup = algoSetups.begin(); itSetup != algoSetups.end(); ++itSetup )
{
RecHitContainer trackingRecHits;
RecHitContainer externalTrackingRecHits;
RecHitContainer zPlusRecHits;
RecHitContainer zMinusRecHits;
// Extract collection with TrackingRecHits
Trajectory::ConstRecHitContainer hits = (*itTrack).first->recHits();
Trajectory::ConstRecHitContainer::iterator itHits;
for ( itHits = hits.begin(); itHits != hits.end(); ++itHits )
{
if ( !(*itHits)->isValid() ) continue;
try
{
//if ( !theNavigator->alignableFromDetId( (*itHits)->geographicalId() )->alignmentParameters() ) continue;
theNavigator->alignableFromDetId( (*itHits)->geographicalId() );
} catch(...) { continue; }
if ( (*itSetup)->useForTracking( *itHits ) )
{
trackingRecHits.push_back( (*itHits)->hit()->clone() );
( (*itHits)->det()->position().z() > 0. ) ?
zPlusRecHits.push_back( (*itHits)->hit()->clone() ) :
zMinusRecHits.push_back( (*itHits)->hit()->clone() );
}
else if ( (*itSetup)->useForExternalTracking( *itHits ) )
{
externalTrackingRecHits.push_back( (*itHits)->hit()->clone() );
}
}
//edm::LogInfo( "KalmanAlignmentTrackRefitter" ) << "Hits for tracking/external: " << trackingRecHits.size() << "/" << externalTrackingRecHits.size();
//if ( !zPlusRecHits.size() || !zMinusRecHits.size() ) continue;
if ( trackingRecHits.empty() ) continue;
if ( externalTrackingRecHits.empty() )
{
if ( ( (*itSetup)->getExternalTrackingSubDetIds().size() == 0 ) && // O.K., no external hits expected,
( trackingRecHits.size() >= (*itSetup)->minTrackingHits() ) )
{
TrajTrackPairCollection refitted = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
(*itSetup)->fitter(), (*itSetup)->propagator(),
aRecHitBuilder.product(), fullTrack,
trackingRecHits, beamSpot,
(*itSetup)->sortingDirection(), false, true );
// The refitting did not work ... Try next!
if ( refitted.empty() ) continue;
if ( rejectTrack( refitted.front().second ) ) continue;
if ( theDebugFlag )
{
debugTrackData( (*itSetup)->id(), refitted.front().first, refitted.front().second, beamSpot );
debugTrackData( "OrigFullTrack", (*itTrack).first, (*itTrack).second, beamSpot );
}
TrackletPtr trackletPtr( new KalmanAlignmentTracklet( refitted.front(), *itSetup ) );
result.push_back( trackletPtr );
}
else { continue; } // Expected external hits but found none or not enough hits.
}
else if ( ( trackingRecHits.size() >= (*itSetup)->minTrackingHits() ) &&
( externalTrackingRecHits.size() >= (*itSetup)->minExternalHits() ) )
{
// Create an instance of KalmanAlignmentTracklet with an external prediction.
TrajTrackPairCollection external = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
(*itSetup)->externalFitter(), (*itSetup)->externalPropagator(),
aRecHitBuilder.product(), fullTrack,
externalTrackingRecHits, beamSpot,
(*itSetup)->externalSortingDirection(),
false, true );
//if ( external.empty() || rejectTrack( external.front().second ) ) { continue; }
if ( external.empty() ) { continue; }
TransientTrack externalTrack( *external.front().second, aMagneticField.product() );
TrajTrackPairCollection refitted = refitSingleTracklet( aGeometry.product(), aMagneticField.product(),
(*itSetup)->fitter(), (*itSetup)->propagator(),
aRecHitBuilder.product(), externalTrack,
trackingRecHits, beamSpot,
(*itSetup)->sortingDirection(),
false, true, (*itSetup)->id() );
if ( refitted.empty() ) { continue; }
if ( rejectTrack( refitted.front().second ) ) continue;
//const Surface& surface = refitted.front().first->firstMeasurement().updatedState().surface();
const Surface& surface = refitted.front().first->lastMeasurement().updatedState().surface();
TrajectoryStateOnSurface externalTsos = externalTrack.impactPointState();
AnalyticalPropagator externalPredictionPropagator( aMagneticField.product(), anyDirection );
TrajectoryStateOnSurface externalPrediction = externalPredictionPropagator.propagate( externalTsos, surface );
if ( !externalPrediction.isValid() ) continue;
if ( theDebugFlag )
{
debugTrackData( string("External") + (*itSetup)->id(), external.front().first, external.front().second, beamSpot );
debugTrackData( (*itSetup)->id(), refitted.front().first, refitted.front().second, beamSpot );
debugTrackData( "OrigFullTrack", (*itTrack).first, (*itTrack).second, beamSpot );
}
TrackletPtr trackletPtr( new KalmanAlignmentTracklet( refitted.front(), externalPrediction, *itSetup ) );
result.push_back( trackletPtr );
delete external.front().first;
delete external.front().second;
}
}
}
return result;
}
| bool KalmanAlignmentTrackRefitter::rejectTrack | ( | const reco::Track * | track | ) | const [private] |
Definition at line 338 of file KalmanAlignmentTrackRefitter.cc.
References reco::TrackBase::chi2(), reco::TrackBase::ndof(), and reco::btau::trackChi2.
Referenced by refitTracks().
{
double trackChi2 = track->chi2();
unsigned int ndof = static_cast<unsigned int>( track->ndof() );
if ( trackChi2 <= 0. || ndof <= 0 ) return false;
//FIXME: should be configurable (via KalmanAlignmentSetup)
double minChi2Prob = 0;//1e-6;
double maxChi2Prob = 1.0;
GENFUNCTION cumulativeChi2 = Genfun::CumulativeChiSquare( ndof );
double chi2Prob = 1. - cumulativeChi2( trackChi2 );
return ( chi2Prob < minChi2Prob ) || ( chi2Prob > maxChi2Prob );
}
| void KalmanAlignmentTrackRefitter::sortRecHits | ( | RecHitContainer & | hits, |
| const TransientTrackingRecHitBuilder * | builder, | ||
| const SortingDirection & | sortingDir | ||
| ) | const [private] |
Definition at line 303 of file KalmanAlignmentTrackRefitter.cc.
References edm::OwnVector< T, P >::back(), edm::OwnVector< T, P >::begin(), TransientTrackingRecHitBuilder::build(), edm::OwnVector< T, P >::end(), edm::OwnVector< T, P >::front(), insideOut, mag(), edm::OwnVector< T, P >::push_back(), edm::OwnVector< T, P >::size(), KalmanAlignmentSetup::sortDownsideUp, KalmanAlignmentSetup::sortInsideOut, KalmanAlignmentSetup::sortOutsideIn, KalmanAlignmentSetup::sortUpsideDown, edm::OwnVector< T, P >::swap(), tmp, and ExpressReco_HICollisions_FallBack::y.
Referenced by refitSingleTracklet().
{
// Don't start sorting if there is only 1 or even 0 elements.
if ( hits.size() < 2 ) return;
TransientTrackingRecHit::RecHitPointer firstHit = builder->build( &hits.front() );
double firstRadius = firstHit->det()->surface().toGlobal( firstHit->localPosition() ).mag();
double firstY = firstHit->det()->surface().toGlobal( firstHit->localPosition() ).y();
TransientTrackingRecHit::RecHitPointer lastHit = builder->build( &hits.back() );
double lastRadius = lastHit->det()->surface().toGlobal( lastHit->localPosition() ).mag();
double lastY = lastHit->det()->surface().toGlobal( lastHit->localPosition() ).y();
bool insideOut = firstRadius < lastRadius;
bool upsideDown = lastY < firstY;
if ( ( insideOut && ( sortingDir == KalmanAlignmentSetup::sortInsideOut ) ) ||
( !insideOut && ( sortingDir == KalmanAlignmentSetup::sortOutsideIn ) ) ||
( upsideDown && ( sortingDir == KalmanAlignmentSetup::sortUpsideDown ) ) ||
( !upsideDown && ( sortingDir == KalmanAlignmentSetup::sortDownsideUp ) ) ) return;
// Fill temporary container with reversed hits.
RecHitContainer tmp;
RecHitContainer::iterator itHit = hits.end();
do { --itHit; tmp.push_back( ( *itHit ).clone() ); } while ( itHit != hits.begin() );
// Swap the content of the temporary and the input container.
hits.swap( tmp );
return;
}
bool KalmanAlignmentTrackRefitter::theDebugFlag [private] |
Definition at line 94 of file KalmanAlignmentTrackRefitter.h.
Referenced by refitTracks().
Definition at line 93 of file KalmanAlignmentTrackRefitter.h.
Referenced by refitTracks().
Definition at line 91 of file KalmanAlignmentTrackRefitter.h.
Referenced by refitSingleTracklet().
1.7.3