#include <AdaptiveVertexReconstructor.h>

Inheritance diagram for AdaptiveVertexReconstructor:

Public Member Functions
	AdaptiveVertexReconstructor (float primcut=2.0, float seccut=6.0, float minweight=0.5, bool smoothing=false)
	AdaptiveVertexReconstructor (const edm::ParameterSet &s)
virtual AdaptiveVertexReconstructor *	clone () const
std::vector< TransientVertex >	vertices (const std::vector< reco::TransientTrack > &, const reco::BeamSpot &) const
std::vector< TransientVertex >	vertices (const std::vector< reco::TransientTrack > &v) const
std::vector< TransientVertex >	vertices (const std::vector< reco::TransientTrack > &primaries, const std::vector< reco::TransientTrack > &tracks, const reco::BeamSpot &) const
	~AdaptiveVertexReconstructor ()
Private Member Functions
TransientVertex	cleanUp (const TransientVertex &old) const
std::vector< TransientVertex >	cleanUpVertices (const std::vector< TransientVertex > &) const
void	erase (const TransientVertex &newvtx, std::set< reco::TransientTrack > &remainingtrks, float w) const
void	setupFitters (float primcut, float primT, float primr, float seccut, float secT, float secr, bool smoothing)
std::vector< TransientVertex >	vertices (const std::vector< reco::TransientTrack > &primaries, const std::vector< reco::TransientTrack > &trks, const reco::BeamSpot &, bool has_primaries, bool usespot) const
Private Attributes
float	theMinWeight
AdaptiveVertexFitter *	thePrimaryFitter
AdaptiveVertexFitter *	theSecondaryFitter
float	theWeightThreshold

Detailed Description

Definition at line 9 of file AdaptiveVertexReconstructor.h.

Constructor & Destructor Documentation

AdaptiveVertexReconstructor::AdaptiveVertexReconstructor	(	float	primcut = `2.0`,
		float	seccut = `6.0`,
		float	minweight = `0.5`,
		bool	smoothing = `false`
	)

Definition at line 89 of file AdaptiveVertexReconstructor.cc.

References setupFitters().

Referenced by clone().

                                                                    :
  thePrimaryFitter ( 0 ), theSecondaryFitter ( 0 ),
       theMinWeight( min_weight ), theWeightThreshold ( 0.001 )
{
  setupFitters ( primcut, 256., 0.25, seccut, 256., 0.25, smoothing );
}

AdaptiveVertexReconstructor::~AdaptiveVertexReconstructor ( )

Definition at line 97 of file AdaptiveVertexReconstructor.cc.

References thePrimaryFitter, and theSecondaryFitter.

{
  if ( thePrimaryFitter ) delete thePrimaryFitter;
  if ( theSecondaryFitter ) delete theSecondaryFitter;
}

AdaptiveVertexReconstructor::AdaptiveVertexReconstructor ( const edm::ParameterSet & s )

The ParameterSet should have the following defined: double primcut double seccut double minweight for descriptions see

Definition at line 136 of file AdaptiveVertexReconstructor.cc.

References ExpressReco_HICollisions_FallBack::e, edm::ParameterSet::getParameter(), setupFitters(), theMinWeight, theWeightThreshold, and cms::Exception::what().

  : thePrimaryFitter(0), theSecondaryFitter(0), theMinWeight(0.5), theWeightThreshold ( 0.001 )
{
  float primcut = 2.0;
  float seccut = 6.0;
  bool smoothing=false;
  // float primT = 4096.;
  // float primr = 0.125;
  float primT = 256.;
  float primr = 0.25;
  float secT = 256.;
  float secr = 0.25;
  
  try {
    primcut =  m.getParameter<double>("primcut");
    primT =  m.getParameter<double>("primT");
    primr =  m.getParameter<double>("primr");
    seccut =  m.getParameter<double>("seccut");
    secT =  m.getParameter<double>("secT");
    secr =  m.getParameter<double>("secr");
    theMinWeight = m.getParameter<double>("minweight");
    theWeightThreshold = m.getParameter<double>("weightthreshold");
    smoothing =  m.getParameter<bool>("smoothing");
  } catch ( edm::Exception & e ) {
    edm::LogError ("AdaptiveVertexReconstructor") << e.what();
  }

  setupFitters ( primcut, primT, primr, seccut, secT, secr, smoothing );
}

Member Function Documentation

TransientVertex AdaptiveVertexReconstructor::cleanUp ( const TransientVertex & old ) const [private]

Definition at line 11 of file AdaptiveVertexReconstructor.cc.

References TransientVertex::degreesOfFreedom(), TransientVertex::hasPrior(), TransientVertex::hasRefittedTracks(), i, TransientVertex::originalTracks(), TransientVertex::priorError(), TransientVertex::priorPosition(), TransientVertex::refittedTracks(), runTheMatrix::ret, TransientVertex::totalChiSquared(), TransientVertex::trackWeight(), TransientVertex::vertexState(), and TransientVertex::weightMap().

{
  vector < reco::TransientTrack > trks = old.originalTracks();
  vector < reco::TransientTrack > newtrks;
  TransientVertex::TransientTrackToFloatMap mp;
  static const float minweight = 1.e-8; // discard all tracks with lower weight
  for ( vector< reco::TransientTrack >::const_iterator i=trks.begin();
        i!=trks.end() ; ++i )
  {
    if ( old.trackWeight ( *i ) > minweight )
    {
      newtrks.push_back ( *i );
      mp[*i]=old.trackWeight ( *i );
    }
  }

  TransientVertex ret;

  if ( old.hasPrior() )
  {
    VertexState priorstate ( old.priorPosition(), old.priorError() );
    ret=TransientVertex ( priorstate, old.vertexState(), newtrks,
        old.totalChiSquared(), old.degreesOfFreedom() );
  } else {
    ret=TransientVertex ( old.vertexState(), newtrks,
                          old.totalChiSquared(), old.degreesOfFreedom() );
  }
  ret.weightMap ( mp ); // set weight map

  if ( old.hasRefittedTracks() )
  {
    // we have refitted tracks -- copy them!
    vector < reco::TransientTrack > newrfs;
    vector < reco::TransientTrack > oldrfs=old.refittedTracks();
    vector < reco::TransientTrack >::const_iterator origtrkiter=trks.begin();
    for ( vector< reco::TransientTrack >::const_iterator i=oldrfs.begin(); i!=oldrfs.end() ; ++i )
    {
      if ( old.trackWeight ( *origtrkiter ) > minweight )
      {
        newrfs.push_back ( *i );
      }
      origtrkiter++;
    }
    if ( newrfs.size() ) ret.refittedTracks ( newrfs ); // copy refitted tracks
  }

  if ( ret.refittedTracks().size() > ret.originalTracks().size() )
  {
    edm::LogError("AdaptiveVertexReconstructor" )
      << "More refitted tracks than original tracks!";
  }

  return ret;
}

vector< TransientVertex > AdaptiveVertexReconstructor::cleanUpVertices ( const std::vector< TransientVertex > & ) const [private]

cleanup reconstructed vertices. discard all with too few significant tracks.

Definition at line 268 of file AdaptiveVertexReconstructor.cc.

References i, runTheMatrix::ret, and theWeightThreshold.

{
  vector < TransientVertex > ret;
  for ( vector< TransientVertex >::const_iterator i=old.begin(); i!=old.end() ; ++i )
  {
    if (!(i->hasTrackWeight()))
    { // if we dont have track weights, we take the vtx
      ret.push_back ( *i );
      continue;
    }

    // maybe this should be replaced with asking for the ndf ...
    // e.g. if ( ndf > - 1. )
    int nsig=0; // number of significant tracks. 
    TransientVertex::TransientTrackToFloatMap wm = i->weightMap();
    for ( TransientVertex::TransientTrackToFloatMap::const_iterator w=wm.begin(); w!=wm.end() ; ++w )
    {
      if (w->second > theWeightThreshold) nsig++;
    }
    if ( nsig > 1 ) ret.push_back ( *i );
  }

  return ret;
}

virtual AdaptiveVertexReconstructor* AdaptiveVertexReconstructor::clone ( void ) const [inline, virtual]

Implements VertexReconstructor.

Definition at line 45 of file AdaptiveVertexReconstructor.h.

References AdaptiveVertexReconstructor().

                                                      {
    return new AdaptiveVertexReconstructor( * this );
  }

void AdaptiveVertexReconstructor::erase	(	const TransientVertex &	newvtx,
		std::set< reco::TransientTrack > &	remainingtrks,
		float	w
	)		const `[private]`

contrary to what its name has you believe, ::erase removes all newvtx.originalTracks() above theMinWeight from remainingtrks.

void AdaptiveVertexReconstructor::setupFitters	(	float	primcut,
		float	primT,
		float	primr,
		float	seccut,
		float	secT,
		float	secr,
		bool	smoothing
	)		`[private]`

setup the vertex fitters.

Definition at line 103 of file AdaptiveVertexReconstructor.cc.

References AdaptiveVertexFitter::setWeightThreshold(), thePrimaryFitter, theSecondaryFitter, and theWeightThreshold.

Referenced by AdaptiveVertexReconstructor().

{
  VertexSmoother<5> * smoother ;
  if ( smoothing )
  {
    smoother = new KalmanVertexSmoother();
  } else {
    smoother = new DummyVertexSmoother<5>();
  }

  if ( thePrimaryFitter ) delete thePrimaryFitter;
  if ( theSecondaryFitter ) delete theSecondaryFitter;

  /*
  edm::LogError ("AdaptiveVertexReconstructor" )
    << "Tini and r are hardcoded now!";
    */
  thePrimaryFitter = new AdaptiveVertexFitter ( GeometricAnnealing ( primcut, primT, primr ), DefaultLinearizationPointFinder(),
      KalmanVertexUpdator<5>(), KalmanVertexTrackCompatibilityEstimator<5>(), *smoother );
  thePrimaryFitter->setWeightThreshold ( theWeightThreshold );
  // if the primary fails, sth is wrong, so here we set a threshold on the weight.
  theSecondaryFitter = new AdaptiveVertexFitter ( GeometricAnnealing ( seccut, secT, secr ), DefaultLinearizationPointFinder(),
      KalmanVertexUpdator<5>(), 
      KalmanVertexTrackCompatibilityEstimator<5>(), *smoother );
  theSecondaryFitter->setWeightThreshold ( 0. );
  // need to set it or else we have 
  // unwanted exceptions to deal with.
  // cleanup can come later!
  delete smoother;
}

std::vector<TransientVertex> AdaptiveVertexReconstructor::vertices	(	const std::vector< reco::TransientTrack > &	primaries,
		const std::vector< reco::TransientTrack > &	trks,
		const reco::BeamSpot &	,
		bool	has_primaries,
		bool	usespot
	)		const `[private]`

the actual fit to avoid code duplication

std::vector<TransientVertex> AdaptiveVertexReconstructor::vertices ( const std::vector< reco::TransientTrack > & ) const [virtual]

Reconstruct vertices

Implements VertexReconstructor.

std::vector<TransientVertex> AdaptiveVertexReconstructor::vertices	(	const std::vector< reco::TransientTrack > &	t,
		const reco::BeamSpot &
	)		const `[virtual]`

Reconstruct vertices, exploiting the beamspot constraint for the primary vertex

Reimplemented from VertexReconstructor.

std::vector<TransientVertex> AdaptiveVertexReconstructor::vertices	(	const std::vector< reco::TransientTrack > &	primaries,
		const std::vector< reco::TransientTrack > &	tracks,
		const reco::BeamSpot &	spot
	)		const `[virtual]`

Reconstruct vertices, but exploit the fact that you know that some tracks cannot come from a secondary vertex. primaries Tracks that _cannot_ come from a secondary vertex (but can, in principle, be non-primaries, also). tracks These are the tracks that are of unknown origin. These tracks are subjected to pattern recognition. spot A beamspot constraint is mandatory in this method.

Reimplemented from VertexReconstructor.