/usr/include/root/TFractionFitter.h is in libroot-hist-dev 5.34.19+dfsg-1.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 | // @(#)root/hist:$Id$
// Author: Frank Filthaut F.Filthaut@science.ru.nl 20/05/2002
#ifndef ROOT_TFractionFitter
#define ROOT_TFractionFitter
#ifndef ROOT_TVirtualFitter
# include "TVirtualFitter.h"
#endif
#ifndef ROOT_TObjArray
# include "TObjArray.h"
#endif
#include <vector>
class TH1;
///////////////////////////////////////////////////////////////////////////////
// TFractionFitter
//
// Fits MC fractions to data histogram (a la HMCMLL, see R. Barlow and C. Beeston,
// Comp. Phys. Comm. 77 (1993) 219-228, and http://www.hep.man.ac.uk/~roger/hfrac.f).
//
///////////////////////////////////////////////////////////////////////////////
class TFractionFitter: public TObject {
public:
TFractionFitter();
TFractionFitter(TH1* data, TObjArray *MCs, Option_t *option="");
virtual ~TFractionFitter();
TVirtualFitter* GetFitter() const;
void ErrorAnalysis(Double_t UP);
void SetRangeX(Int_t low, Int_t high);
void ReleaseRangeX();
void SetRangeY(Int_t low, Int_t high);
void ReleaseRangeY();
void SetRangeZ(Int_t low, Int_t high);
void ReleaseRangeZ();
void ExcludeBin(Int_t bin);
void IncludeBin(Int_t bin);
void Constrain(Int_t parm, Double_t low, Double_t high);
void UnConstrain(Int_t parm);
void SetData(TH1 *data);
void SetMC(Int_t parm, TH1 *MC);
void SetWeight(Int_t parm, TH1* weight);
Int_t Fit();
void GetResult(Int_t parm, Double_t& value, Double_t& error) const;
TH1* GetPlot();
// This global function needs access to computeFCN()
friend void TFractionFitFCN(Int_t& npar, Double_t* gin, Double_t& f, Double_t* par, Int_t flag);
// Goodness of fit
Double_t GetChisquare() const;
Int_t GetNDF() const;
Double_t GetProb() const;
// MC predictions (smeared templates)
TH1* GetMCPrediction(Int_t parm) const;
private:
void CheckParNo(Int_t parm) const;
void CheckConsistency();
void FindPrediction(int bin, double& t_i, int& k_0, double& A_ki) const;
void ComputeFCN(Int_t& npar, Double_t* gin, Double_t& f, Double_t* par, Int_t flag);
void GetRanges(Int_t& minX, Int_t& maxX, Int_t& minY, Int_t& maxY,
Int_t& minZ, Int_t& maxZ) const;
void ComputeChisquareLambda();
bool IsExcluded(Int_t bin) const;
protected:
Bool_t fFitDone; // flags whether a valid fit has been performed
Int_t fLowLimitX; // first bin in X dimension
Int_t fHighLimitX; // last bin in X dimension
Int_t fLowLimitY; // first bin in Y dimension
Int_t fHighLimitY; // last bin in Y dimension
Int_t fLowLimitZ; // first bin in Z dimension
Int_t fHighLimitZ; // last bin in Z dimension
std::vector<Int_t> fExcludedBins; // bins excluded from the fit
Int_t fNpfits; // Number of points used in the fit
Int_t fNDF; // Number of degrees of freedom in the fit
Double_t fChisquare; // Template fit chisquare
TObjArray fAji; // array of pointers to predictions of real template distributions
// Histograms
TH1* fData; // pointer to the "data" histogram to be fitted to
TObjArray fMCs; // array of pointers to template histograms
TObjArray fWeights; // array of pointers to corresponding weight factors (may be null)
Double_t fIntegralData; // "data" histogram content integral over allowed fit range
Double_t* fIntegralMCs; // same for template histograms (weights not taken into account)
Double_t* fFractions; // template fractions scaled to the "data" histogram statistics
TH1* fPlot; // pointer to histogram containing summed template predictions
Int_t fNpar; // number of fit parameters
ClassDef(TFractionFitter, 0) // Fits MC fractions to data histogram
};
//
// TFractionFitFCN
//
// Computes negative log-likelihood for TFractionFitter
//
void TFractionFitFCN(Int_t& npar, Double_t* gin, Double_t& f, Double_t* par, Int_t flag);
#endif // ROOT_TFractionFitter
|