#include <TrackCountingComputer.h>

Inheritance diagram for TrackCountingComputer:

Public Member Functions
float	discriminator (const TagInfoHelper &ti) const

	TrackCountingComputer (const edm::ParameterSet &parameters)

Public Member Functions inherited from JetTagComputer
const std::vector< std::string > &	getInputLabels () const

	JetTagComputer ()

	JetTagComputer (const edm::ParameterSet &configuration)

float	operator() (const reco::BaseTagInfo &info) const

float	operator() (const TagInfoHelper &helper) const

virtual void	setEventSetup (const edm::EventSetup &) const

virtual	~JetTagComputer ()

Protected Member Functions
std::multiset< float >	orderedSignificances (const reco::TrackIPTagInfo &tkip) const

Protected Member Functions inherited from JetTagComputer
virtual float	discriminator (const reco::BaseTagInfo &) const

void	uses (unsigned int id, const std::string &label)

void	uses (const std::string &label)

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

inlinevirtual

Reimplemented from JetTagComputer.

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

inlineprotected

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(), and 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;    
    }