#include <TrackCountingComputer.h>

Inheritance diagram for TrackCountingComputer:

Public Member Functions
float	discriminator (const TagInfoHelper &ti) const
	TrackCountingComputer (const edm::ParameterSet &parameters)
Protected Member Functions
std::multiset< float >	orderedSignificances (const reco::TrackIPTagInfo &tkip) const
Protected Attributes
double	m_cutMaxDecayLen
double	m_cutMaxDistToAxis
double	m_deltaR
int	m_ipType
int	m_nthTrack
reco::TrackBase::TrackQuality	m_trackQuality
bool	m_useAllQualities

Detailed Description

Definition at line 11 of file TrackCountingComputer.h.

Constructor & Destructor Documentation

TrackCountingComputer::TrackCountingComputer ( const edm::ParameterSet & parameters ) [inline]

Definition at line 14 of file TrackCountingComputer.h.

References edm::ParameterSet::getParameter(), m_cutMaxDecayLen, m_cutMaxDistToAxis, m_deltaR, m_ipType, m_nthTrack, m_trackQuality, m_useAllQualities, reco::TrackBase::qualityByName(), and JetTagComputer::uses().

  {
     m_nthTrack         = parameters.getParameter<int>("nthTrack");
     m_ipType           = parameters.getParameter<int>("impactParameterType");
     m_deltaR           = parameters.getParameter<double>("deltaR");
     m_cutMaxDecayLen   = parameters.getParameter<double>("maximumDecayLength"); //used
     m_cutMaxDistToAxis = parameters.getParameter<double>("maximumDistanceToJetAxis"); //used
     //
     // access track quality class; "any" takes everything
     //
     std::string trackQualityType = parameters.getParameter<std::string>("trackQualityClass"); //used
     m_trackQuality =  reco::TrackBase::qualityByName(trackQualityType);
     m_useAllQualities = false;
     if (trackQualityType == "any" || 
         trackQualityType == "Any" || 
         trackQualityType == "ANY" ) m_useAllQualities = true;

     uses("ipTagInfos");
  }

Member Function Documentation

float TrackCountingComputer::discriminator ( const TagInfoHelper & ti ) const [inline, virtual]

Reimplemented from JetTagComputer.

Reimplemented in NegativeTrackCountingComputer, and PromptTrackCountingComputer.

Definition at line 35 of file TrackCountingComputer.h.

References JetTagComputer::TagInfoHelper::get(), i, m_nthTrack, and orderedSignificances().

   {
    const reco::TrackIPTagInfo & tkip = ti.get<reco::TrackIPTagInfo>();
    std::multiset<float> significances = orderedSignificances(tkip);
    std::multiset<float>::reverse_iterator nth=significances.rbegin();
    for(int i=0;i<m_nthTrack-1 && nth!=significances.rend();i++) nth++;  
     if(nth!=significances.rend()) return *nth; else return -100.;
   }

std::multiset<float> TrackCountingComputer::orderedSignificances ( const reco::TrackIPTagInfo & tkip ) const [inline, protected]

Definition at line 45 of file TrackCountingComputer.h.

References i, reco::TrackIPTagInfo::impactParameterData(), PyquenDefaultSettings_cff::impactParameters, edm::Ref< C, T, F >::isNull(), reco::JTATagInfo::jet(), m_cutMaxDecayLen, m_cutMaxDistToAxis, m_deltaR, m_ipType, m_trackQuality, m_useAllQualities, p4, reco::TrackIPTagInfo::primaryVertex(), reco::TrackIPTagInfo::selectedTracks(), and testEve_cfg::tracks.

Referenced by NegativeTrackCountingComputer::discriminator(), discriminator(), and PromptTrackCountingComputer::discriminator().

                                                                                       {

          const std::vector<reco::TrackIPTagInfo::TrackIPData> & impactParameters((tkip.impactParameterData()));
          const edm::RefVector<reco::TrackCollection> & tracks(tkip.selectedTracks());
          std::multiset<float> significances;
          int i=0;
          if(tkip.primaryVertex().isNull())  {  return std::multiset<float>();}

          GlobalPoint pv(tkip.primaryVertex()->position().x(),tkip.primaryVertex()->position().y(),tkip.primaryVertex()->position().z());

          for(std::vector<reco::TrackIPTagInfo::TrackIPData>::const_iterator it = impactParameters.begin(); it!=impactParameters.end(); ++it, i++)
           {
           if(   fabs(impactParameters[i].distanceToJetAxis.value()) < m_cutMaxDistToAxis  &&        // distance to JetAxis
                 (impactParameters[i].closestToJetAxis - pv).mag() < m_cutMaxDecayLen  &&      // max decay len
                 (m_useAllQualities  == true || (*tracks[i]).quality(m_trackQuality)) // use selected track qualities
             )
             {
                if(m_deltaR <=0  || ROOT::Math::VectorUtil::DeltaR((*tkip.jet()).p4().Vect(), (*tracks[i]).momentum()) < m_deltaR)
                 significances.insert( ((m_ipType==0)?it->ip3d:it->ip2d).significance() );
              }
          }
 
         return significances;    
   }