3 #ifndef ALIMULTIPLICITYCORRECTION_H
4 #define ALIMULTIPLICITYCORRECTION_H
9 // class that contains the correction matrix and the functions for
10 // correction the multiplicity spectrum
24 class AliMultiplicityCorrection : public TNamed {
26 enum EventType { kTrVtx = 0, kMB, kINEL };
27 enum RegularizationType { kNone = 0, kPol0, kPol1, kEntropy, kCurvature, kTest };
29 AliMultiplicityCorrection();
30 AliMultiplicityCorrection(const Char_t* name, const Char_t* title);
31 virtual ~AliMultiplicityCorrection();
33 virtual Long64_t Merge(TCollection* list);
35 void FillMeasured(Float_t vtx, Int_t measured05, Int_t measured10, Int_t measured15, Int_t measured20);
36 void FillGenerated(Float_t vtx, Bool_t triggered, Bool_t vertex, Int_t generated05, Int_t generated10, Int_t generated15, Int_t generated20, Int_t generatedAll);
38 void FillCorrection(Float_t vtx, Int_t generated05, Int_t generated10, Int_t generated15, Int_t generated20, Int_t generatedAll, Int_t measured05, Int_t measured10, Int_t measured15, Int_t measured20);
40 Bool_t LoadHistograms(const Char_t* dir);
41 void SaveHistograms();
42 void DrawHistograms();
43 void DrawComparison(const char* name, Int_t inputRange, Bool_t fullPhaseSpace, Bool_t normalizeESD, TH1* mcHist, Bool_t simple = kFALSE);
45 Int_t ApplyMinuitFit(Int_t inputRange, Bool_t fullPhaseSpace, EventType eventType, Bool_t check = kFALSE, TH1* inputDist = 0);
46 void SetRegularizationParameters(RegularizationType type, Float_t weight);
48 void ApplyNBDFit(Int_t inputRange, Bool_t fullPhaseSpace);
50 void ApplyBayesianMethod(Int_t inputRange, Bool_t fullPhaseSpace, EventType eventType, Float_t regPar = 0.1, Int_t nIterations = 15, TH1* inputDist = 0);
52 void ApplyGaussianMethod(Int_t inputRange, Bool_t fullPhaseSpace);
54 void ApplyLaszloMethod(Int_t inputRange, Bool_t fullPhaseSpace, EventType eventType);
56 TH2F* GetMultiplicityESD(Int_t i) { return fMultiplicityESD[i]; }
57 TH2F* GetMultiplicityVtx(Int_t i) { return fMultiplicityVtx[i]; }
58 TH2F* GetMultiplicityMB(Int_t i) { return fMultiplicityMB[i]; }
59 TH2F* GetMultiplicityINEL(Int_t i) { return fMultiplicityINEL[i]; }
60 TH2F* GetMultiplicityMC(Int_t i, EventType eventType);
61 TH3F* GetCorrelation(Int_t i) { return fCorrelation[i]; }
62 TH1F* GetMultiplicityESDCorrected(Int_t i) { return fMultiplicityESDCorrected[i]; }
64 void SetMultiplicityESD(Int_t i, TH2F* hist) { fMultiplicityESD[i] = hist; }
65 void SetMultiplicityVtx(Int_t i, TH2F* hist) { fMultiplicityVtx[i] = hist; }
66 void SetMultiplicityMB(Int_t i, TH2F* hist) { fMultiplicityMB[i] = hist; }
67 void SetMultiplicityINEL(Int_t i, TH2F* hist) { fMultiplicityINEL[i] = hist; }
68 void SetCorrelation(Int_t i, TH3F* hist) { fCorrelation[i] = hist; }
69 void SetMultiplicityESDCorrected(Int_t i, TH1F* hist) { fMultiplicityESDCorrected[i] = hist; }
71 void SetGenMeasFromFunc(TF1* inputMC, Int_t id);
72 TH2F* CalculateMultiplicityESD(TH1* inputMC, Int_t correlationMap);
74 static void NormalizeToBinWidth(TH1* hist);
75 static void NormalizeToBinWidth(TH2* hist);
77 void GetComparisonResults(Float_t* mc, Int_t* mcLimit, Float_t* residuals);
80 enum { kESDHists = 4, kMCHists = 5, kCorrHists = 8 };
82 static const Int_t fgMaxParams; // bins in unfolded histogram = number of fit params
83 static const Int_t fgMaxInput; // bins in measured histogram
85 static Double_t RegularizationPol0(TVectorD& params);
86 static Double_t RegularizationPol1(TVectorD& params);
87 static Double_t RegularizationTotalCurvature(TVectorD& params);
88 static Double_t RegularizationEntropy(TVectorD& params);
89 static Double_t RegularizationTest(TVectorD& params);
91 static void MinuitFitFunction(Int_t&, Double_t*, Double_t& chi2, Double_t *params, Int_t);
92 static void MinuitNBD(Int_t& unused1, Double_t* unused2, Double_t& chi2, Double_t *params, Int_t unused3);
94 void SetupCurrentHists(Int_t inputRange, Bool_t fullPhaseSpace, EventType eventType, Bool_t createBigBin);
96 Float_t BayesCovarianceDerivate(Float_t matrixM[251][251], TH2* hResponse, TH1* fCurrentEfficiency, Int_t k, Int_t i, Int_t r, Int_t u);
98 static TH1* fCurrentESD; // static variable to be accessed by MINUIT
99 static TH1* fCurrentCorrelation; // static variable to be accessed by MINUIT
100 static TH1* fCurrentEfficiency; // static variable to be accessed by MINUIT
102 static TMatrixD* fCorrelationMatrix; // contains fCurrentCorrelation in matrix form
103 static TMatrixD* fCorrelationCovarianceMatrix; // contains the errors of fCurrentESD
104 static TVectorD* fCurrentESDVector; // contains fCurrentESD
105 static TVectorD* fEntropyAPriori; // a-priori distribution for entropy regularization
107 static TF1* fNBD; // negative binomial distribution
109 static RegularizationType fRegularizationType; // regularization that is used during Chi2 method
110 static Float_t fRegularizationWeight; // factor for regularization term
112 TH2F* fMultiplicityESD[kESDHists]; // multiplicity histogram: vtx vs multiplicity; array: |eta| < 0.5, 1, 1.5, 2 (0..3)
113 TH2F* fMultiplicityVtx[kMCHists]; // multiplicity histogram of events that have a reconstructed vertex : vtx vs multiplicity; array: |eta| < 0.5, 1, 1.5, 2, inf (0..4)
114 TH2F* fMultiplicityMB[kMCHists]; // multiplicity histogram of triggered events : vtx vs multiplicity; array: |eta| < 0.5, 1, 1.5, 2, inf (0..4)
115 TH2F* fMultiplicityINEL[kMCHists]; // multiplicity histogram of all (inelastic) events : vtx vs multiplicity; array: |eta| < 0.5, 1, 1.5, 2, inf (0..4)
117 TH3F* fCorrelation[kCorrHists]; // vtx vs. (gene multiplicity (trig+vtx)) vs. (meas multiplicity); array: |eta| < 0.5, 1, 1.5, 2 (0..3 and 4..7), the first corrects to the eta range itself, the second to full phase space
118 TH1F* fMultiplicityESDCorrected[kCorrHists]; // corrected histograms
120 Float_t fLastChi2MC; // last Chi2 between MC and unfolded ESD (calculated in DrawComparison)
121 Int_t fLastChi2MCLimit; // bin where the last chi2 breached a certain threshold, used to evaluate the multiplicity reach (calc. in DrawComparison)
122 Float_t fLastChi2Residuals; // last Chi2 of the ESD and the folded unfolded ESD (calculated in DrawComparison)
125 AliMultiplicityCorrection(const AliMultiplicityCorrection&);
126 AliMultiplicityCorrection& operator=(const AliMultiplicityCorrection&);
128 ClassDef(AliMultiplicityCorrection, 1);