File indexing completed on 2025-01-31 02:19:52
0001 #ifndef ImpactParameter_TemplatedJetProbabilityComputer_h
0002 #define ImpactParameter_TemplatedJetProbabilityComputer_h
0003
0004 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0005 #include "DataFormats/TrackReco/interface/Track.h"
0006 #include "DataFormats/BTauReco/interface/TrackProbabilityTagInfo.h"
0007 #include "DataFormats/BTauReco/interface/TrackIPTagInfo.h"
0008 #include "DataFormats/VertexReco/interface/Vertex.h"
0009 #include "Math/GenVector/VectorUtil.h"
0010 #include "RecoBTau/JetTagComputer/interface/JetTagComputer.h"
0011
0012 #include <iostream>
0013
0014 template <class Container, class Base>
0015 class TemplatedJetProbabilityComputer : public JetTagComputer {
0016 public:
0017 using Tokens = void;
0018
0019 typedef reco::IPTagInfo<Container, Base> TagInfo;
0020
0021 TemplatedJetProbabilityComputer(const edm::ParameterSet& parameters) {
0022 m_ipType = parameters.getParameter<int>("impactParameterType");
0023 m_minTrackProb = parameters.getParameter<double>("minimumProbability");
0024 m_deltaR = parameters.getParameter<double>("deltaR");
0025 m_trackSign = parameters.getParameter<int>("trackIpSign");
0026 m_cutMaxDecayLen = parameters.getParameter<double>("maximumDecayLength");
0027 m_cutMaxDistToAxis = parameters.getParameter<double>("maximumDistanceToJetAxis");
0028
0029
0030
0031 std::string trackQualityType = parameters.getParameter<std::string>("trackQualityClass");
0032 m_trackQuality = reco::TrackBase::qualityByName(trackQualityType);
0033 m_useAllQualities = false;
0034 if (trackQualityType == "any" || trackQualityType == "Any" || trackQualityType == "ANY")
0035 m_useAllQualities = true;
0036
0037 useVariableJTA_ = parameters.getParameter<bool>("useVariableJTA");
0038 if (useVariableJTA_)
0039 varJTApars = {parameters.getParameter<double>("a_dR"),
0040 parameters.getParameter<double>("b_dR"),
0041 parameters.getParameter<double>("a_pT"),
0042 parameters.getParameter<double>("b_pT"),
0043 parameters.getParameter<double>("min_pT"),
0044 parameters.getParameter<double>("max_pT"),
0045 parameters.getParameter<double>("min_pT_dRcut"),
0046 parameters.getParameter<double>("max_pT_dRcut"),
0047 parameters.getParameter<double>("max_pT_trackPTcut")};
0048
0049 uses("ipTagInfos");
0050 }
0051
0052 static void fillPSetDescription(edm::ParameterSetDescription& desc) {
0053 desc.add<int>("impactParameterType", 0)->setComment("0 = 3D, 1 = 2D");
0054 desc.add<double>("minimumProbability", 0.005);
0055 desc.add<double>("deltaR", 0.3);
0056 desc.add<int>("trackIpSign", 1)->setComment("0 = use both, 1 = positive only, -1 = negative only");
0057 desc.add<double>("maximumDecayLength", 5.0);
0058 desc.add<double>("maximumDistanceToJetAxis", 0.07);
0059 desc.add<std::string>("trackQualityClass", "any");
0060 desc.add<bool>("useVariableJTA", false);
0061 desc.add<double>("a_dR", -0.001053);
0062 desc.add<double>("b_dR", 0.6263);
0063 desc.add<double>("a_pT", 0.005263);
0064 desc.add<double>("b_pT", 0.3684);
0065 desc.add<double>("min_pT", 120);
0066 desc.add<double>("max_pT", 500);
0067 desc.add<double>("min_pT_dRcut", 0.5);
0068 desc.add<double>("max_pT_dRcut", 0.1);
0069 desc.add<double>("max_pT_trackPTcut", 3.);
0070 }
0071
0072 float discriminator(const TagInfoHelper& ti) const override {
0073 const TagInfo& tkip = ti.get<TagInfo>();
0074 const Container& tracks(tkip.selectedTracks());
0075 const std::vector<float>& allProbabilities((tkip.probabilities(m_ipType)));
0076 const std::vector<reco::btag::TrackIPData>& impactParameters((tkip.impactParameterData()));
0077
0078 if (tkip.primaryVertex().isNull())
0079 return 0;
0080
0081 GlobalPoint pv(tkip.primaryVertex()->position().x(),
0082 tkip.primaryVertex()->position().y(),
0083 tkip.primaryVertex()->position().z());
0084
0085 std::vector<float> probabilities;
0086 int i = 0;
0087 for (std::vector<float>::const_iterator it = allProbabilities.begin(); it != allProbabilities.end(); ++it, i++) {
0088 if (fabs(impactParameters[i].distanceToJetAxis.value()) < m_cutMaxDistToAxis &&
0089 (impactParameters[i].closestToJetAxis - pv).mag() < m_cutMaxDecayLen &&
0090 (m_useAllQualities == true ||
0091 reco::btag::toTrack(tracks[i])->quality(m_trackQuality))
0092 ) {
0093 float p;
0094 if (m_trackSign == 0) {
0095 if (*it >= 0) {
0096 p = *it / 2.;
0097 } else {
0098 p = 1. + *it / 2.;
0099 }
0100 } else if (m_trackSign > 0) {
0101 if (*it >= 0)
0102 p = *it;
0103 else
0104 continue;
0105 } else {
0106 if (*it <= 0)
0107 p = -*it;
0108 else
0109 continue;
0110 }
0111 if (useVariableJTA_) {
0112 if (tkip.variableJTA(varJTApars)[i])
0113 probabilities.push_back(p);
0114 } else {
0115 if (m_deltaR <= 0 ||
0116 ROOT::Math::VectorUtil::DeltaR((*tkip.jet()).p4().Vect(), (*tracks[i]).momentum()) < m_deltaR)
0117 probabilities.push_back(p);
0118 }
0119 }
0120 }
0121 return jetProbability(probabilities);
0122 }
0123
0124 double jetProbability(const std::vector<float>& v) const {
0125 int ngoodtracks = v.size();
0126 double SumJet = 0.;
0127
0128 for (std::vector<float>::const_iterator q = v.begin(); q != v.end(); q++) {
0129 SumJet += (*q > m_minTrackProb) ? log(*q) : log(m_minTrackProb);
0130 }
0131
0132 double ProbJet;
0133 double Loginvlog = 0;
0134
0135 if (SumJet < 0.) {
0136 if (ngoodtracks >= 2) {
0137 Loginvlog = log(-SumJet);
0138 }
0139 double Prob = 1.;
0140 double lfact = 1.;
0141 for (int l = 1; l != ngoodtracks; l++) {
0142 lfact *= l;
0143 Prob += exp(l * Loginvlog - log(1. * lfact));
0144 }
0145 double LogProb = log(Prob);
0146 ProbJet = std::min(exp(std::max(LogProb + SumJet, -30.)), 1.);
0147 } else {
0148 ProbJet = 1.;
0149 }
0150 if (ProbJet > 1)
0151 std::cout << "ProbJet too high: " << ProbJet << std::endl;
0152
0153
0154
0155 return -log10(ProbJet) / 4.;
0156 }
0157
0158 private:
0159 bool useVariableJTA_;
0160 reco::btag::variableJTAParameters varJTApars;
0161 double m_minTrackProb;
0162 int m_ipType;
0163 double m_deltaR;
0164 int m_trackSign;
0165 double m_cutMaxDecayLen;
0166 double m_cutMaxDistToAxis;
0167 reco::TrackBase::TrackQuality m_trackQuality;
0168 bool m_useAllQualities;
0169 };
0170
0171 #endif