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Merge pull request #14299 from VinInn/TkFastClean
Tracking Fast cleaner during pattern recognition
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50 changes: 50 additions & 0 deletions
50
TrackingTools/TrajectoryCleaning/interface/FastTrajectoryCleaner.h
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| #ifndef TrajectoryCleaning_FastTrajectoryCleaner_h | ||
| #define TrajectoryCleaning_FastTrajectoryCleaner_h | ||
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| #include "TrackingTools/TrajectoryCleaning/interface/TrajectoryCleaner.h" | ||
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| /** A concrete TrajectoryCleaner that assumes all trajectories | ||
| * coming from the same seed and therefore incompatible | ||
| * The "best" trajectory of is kept, the others are invalidated. | ||
| * The goodness of a track is defined in terms of Chi^2, number of | ||
| * reconstructed hits, and number of lost hits. | ||
| * As it can be used during PatternReco there is the option to not consider hits from the common seed | ||
| */ | ||
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| class FastTrajectoryCleaner final : public TrajectoryCleaner { | ||
| public: | ||
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| using TrajectoryPointerContainer = TrajectoryCleaner::TrajectoryPointerContainer; | ||
| using TempTrajectoryContainer = TrajectoryCleaner::TempTrajectoryContainer; | ||
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| FastTrajectoryCleaner() : | ||
| validHitBonus_(0.5f*5.0f), | ||
| missingHitPenalty_(20.0f), | ||
| dismissSeed_(true){} | ||
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| FastTrajectoryCleaner(float bonus, float penalty, bool noSeed=true) : | ||
| validHitBonus_(0.5f*bonus), | ||
| missingHitPenalty_(penalty), | ||
| dismissSeed_(noSeed){} | ||
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| FastTrajectoryCleaner(const edm::ParameterSet & iConfig) : | ||
| validHitBonus_(0.5*iConfig.getParameter<double>("ValidHitBonus")), | ||
| missingHitPenalty_(iConfig.getParameter<double>("MissingHitPenalty")), | ||
| dismissSeed_(iConfig.getParameter<bool>("dismissSeed")){} | ||
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| ~FastTrajectoryCleaner(){} | ||
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| void clean(TempTrajectoryContainer&) const override; | ||
| void clean(TrajectoryPointerContainer&) const override; | ||
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| private: | ||
| float validHitBonus_; // here per dof | ||
| float missingHitPenalty_; | ||
| bool dismissSeed_; | ||
| }; | ||
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| #endif |
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48
TrackingTools/TrajectoryCleaning/src/FastTrajectoryCleaner.cc
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| #include "TrackingTools/TrajectoryCleaning/interface/FastTrajectoryCleaner.h" | ||
| void FastTrajectoryCleaner::clean( TrajectoryPointerContainer & tc) const | ||
| { | ||
| edm::LogError("FastTrajectoryCleaner") << "not implemented for Trajectory"; | ||
| assert(false); | ||
| } | ||
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| void FastTrajectoryCleaner::clean( TempTrajectoryContainer & tc) const | ||
| { | ||
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| if (tc.size() <= 1) return; // nothing to clean | ||
| float maxScore= -std::numeric_limits<float>::max(); | ||
| TempTrajectory * bestTr = nullptr; | ||
| for (auto & it : tc) { | ||
| if (!it.isValid()) continue; | ||
| auto const & pd = it.measurements(); | ||
| // count active degree of freedom | ||
| int dof=0; | ||
| for (auto const & im : pd) { | ||
| if(dismissSeed_ & (im.estimate()==0)) continue; | ||
| auto const & h = im.recHitR(); | ||
| if (!h.isValid()) continue; | ||
| dof+=h.dimension(); | ||
| } | ||
| float score = validHitBonus_*dof - missingHitPenalty_*it.lostHits() - it.chiSquared(); | ||
| if (score>=maxScore) { | ||
| bestTr = ⁢ | ||
| maxScore = score; | ||
| } | ||
| } | ||
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| for (auto & it : tc) { | ||
| if ((&it)!=bestTr) it.invalidate(); | ||
| } | ||
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| } | ||
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| /* | ||
| auto score = [&](Trajectory const&t)->float { | ||
| // possible variant under study | ||
| // auto ns = t.foundHits()-t.trailingFoundHits(); | ||
| //auto penalty = 0.8f*missingHitPenalty_; | ||
| // return validHitBonus_*(t.foundHits()-0.2f*t.cccBadHits()) - penalty*t.lostHits() - t.chiSquared(); | ||
| // classical score | ||
| return validHitBonus_*t.foundHits() - missingHitPenalty_*t.lostHits() - t.chiSquared(); | ||
| }; | ||
| */ |
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