GsfVertexMerger Class Reference

#include <GsfVertexMerger.h>

Public Member Functions
GsfVertexMerger *	clone () const
	GsfVertexMerger (const edm::ParameterSet &pSet)
CachingVertex< 5 >	merge (const CachingVertex< 5 > &vertex) const
VertexState	merge (const VertexState &vertex) const
	~GsfVertexMerger ()

Private Attributes
unsigned int	maxComponents
DeepCopyPointerByClone< MultiGaussianStateMerger< 3 > >	merger

Detailed Description

Definition at line 15 of file GsfVertexMerger.h.

Constructor & Destructor Documentation

GsfVertexMerger()

GsfVertexMerger::GsfVertexMerger

(

const edm::ParameterSet &

pSet

)

Definition at line 13 of file GsfVertexMerger.cc.

                                                            {
  maxComponents = pSet.getParameter<int>("maxNbrComponents");
  std::string mergerName = pSet.getParameter<std::string>("merger");
  std::string distanceName = pSet.getParameter<std::string>("distance");
 
  if (mergerName == "CloseComponentsMerger") {
    DistanceBetweenComponents<3>* distance;
 
    if (distanceName == "KullbackLeiblerDistance")
      distance = new KullbackLeiblerDistance<3>();
    //     else if ( distanceName=="MahalanobisDistance" )
    //       distance = new MahalanobisDistance();
    else
      throw VertexException("GsfVertexMerger: Distance type " + distanceName +
                            " unknown. Check distance parameter in GsfMergerParameters PSet");
 
    merger = new CloseComponentsMerger<3>(maxComponents, distance);
    delete distance;
  }
  //   else if ( mergerName=="LargestWeightsStateMerger" )
  //     merger = new LargestWeightsStateMerger(maxComponents);
  else
    throw VertexException("GsfVertexMerger: Merger type " + mergerName +
                          " unknown. Check merger parameter in GsfMergerParameters PSet");
 
  //   else if ( mergerName=="KeepingNonZeroWeightsMerger" )
  //     merger = new KeepingNonZeroWeightsMerger();
 
  //   std::string mergerName = "test";
  //   edm::ESHandle<MultiGaussianStateMerger> mergerProducer;
  //   iRecord.get(mergerName,mergerProducer);
  //   merger = (MultiGaussianStateMerger *) mergerProducer.product();
}

References HLT_FULL_cff::distance, edm::ParameterSet::getParameter(), maxComponents, merger, and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by clone().

~GsfVertexMerger()

GsfVertexMerger::~GsfVertexMerger ( )

inline

Definition at line 18 of file GsfVertexMerger.h.

{}

Member Function Documentation

clone()

GsfVertexMerger* GsfVertexMerger::clone ( void  ) const

inline

Definition at line 24 of file GsfVertexMerger.h.

{ return new GsfVertexMerger(*this); }

References GsfVertexMerger().

Referenced by GsfVertexSmoother::GsfVertexSmoother(), and GsfVertexUpdator::GsfVertexUpdator().

merge() [1/2]

CachingVertex< 5 > GsfVertexMerger::merge

(

const CachingVertex< 5 > &

vertex

)

const

Definition at line 47 of file GsfVertexMerger.cc.

                                                                               {
  if (oldVertex.vertexState().components().size() <= maxComponents)
    return oldVertex;
 
  VertexState newVertexState = merge(oldVertex.vertexState());
 
  if (oldVertex.hasPrior()) {
    return CachingVertex<5>(oldVertex.priorPosition(),
                            oldVertex.priorError(),
                            newVertexState.weightTimesPosition(),
                            newVertexState.weight(),
                            oldVertex.tracks(),
                            oldVertex.totalChiSquared());
  } else {
    return CachingVertex<5>(newVertexState, oldVertex.tracks(), oldVertex.totalChiSquared());
  }
}

References VertexState::components(), CachingVertex< N >::hasPrior(), maxComponents, CachingVertex< N >::priorError(), CachingVertex< N >::priorPosition(), CachingVertex< N >::totalChiSquared(), CachingVertex< N >::tracks(), CachingVertex< N >::vertexState(), VertexState::weight(), and VertexState::weightTimesPosition().

Referenced by GsfVertexUpdator::add(), and GsfVertexSmoother::smooth().

merge() [2/2]

VertexState GsfVertexMerger::merge

(

const VertexState &

vertex

)

const

Definition at line 65 of file GsfVertexMerger.cc.

                                                                     {
  using namespace GaussianStateConversions;
 
  if (oldVertex.components().size() <= maxComponents)
    return oldVertex;
 
  MultiGaussianState<3> multiGaussianState(multiGaussianStateFromVertex(oldVertex));
  MultiGaussianState<3> finalState(merger->merge(multiGaussianState));
  return vertexFromMultiGaussianState(finalState);
}

References VertexState::components(), maxComponents, MultiGaussianStateMerger< N >::merge(), merger, GaussianStateConversions::multiGaussianStateFromVertex(), and GaussianStateConversions::vertexFromMultiGaussianState().

Member Data Documentation

maxComponents

unsigned int GsfVertexMerger::maxComponents

private

Definition at line 28 of file GsfVertexMerger.h.

Referenced by GsfVertexMerger(), and merge().

merger

DeepCopyPointerByClone<MultiGaussianStateMerger<3> > GsfVertexMerger::merger

private

Definition at line 27 of file GsfVertexMerger.h.

Referenced by GsfVertexMerger(), and merge().