library: libRooFit
#include "RooMCIntegrator.h"

RooMCIntegrator


class description - source file - inheritance tree (.pdf)

class RooMCIntegrator : public RooAbsIntegrator

Inheritance Chart:
TObject
<-
RooAbsIntegrator
<-
RooMCIntegrator

    public:
RooMCIntegrator() RooMCIntegrator(const RooAbsFunc& function, RooMCIntegrator::SamplingMode mode = Importance, RooMCIntegrator::GeneratorType genType = QuasiRandom, Bool_t verbose = kFALSE) RooMCIntegrator(const RooAbsFunc& function, const RooNumIntConfig& config) RooMCIntegrator(const RooMCIntegrator&) virtual ~RooMCIntegrator() virtual Bool_t canIntegrate1D() const virtual Bool_t canIntegrate2D() const virtual Bool_t canIntegrateND() const virtual Bool_t canIntegrateOpenEnded() const virtual Bool_t checkLimits() const static TClass* Class() virtual RooAbsIntegrator* clone(const RooAbsFunc& function, const RooNumIntConfig& config) const Double_t getAlpha() const RooMCIntegrator::GeneratorType getGenType() const const RooGrid& grid() const virtual Double_t integral(const Double_t* yvec = 0) virtual TClass* IsA() const void setAlpha(Double_t alpha) void setGenType(RooMCIntegrator::GeneratorType type) virtual void ShowMembers(TMemberInspector& insp, char* parent) virtual void Streamer(TBuffer& b) void StreamerNVirtual(TBuffer& b) Double_t vegas(RooMCIntegrator::Stage stage, UInt_t calls, UInt_t iterations, Double_t* absError = 0)

Data Members


    protected:
RooGrid _grid Bool_t _verbose Double_t _alpha Int_t _mode RooMCIntegrator::GeneratorType _genType Int_t _nRefineIter Int_t _nRefinePerDim Int_t _nIntegratePerDim TStopwatch _timer Double_t _jac Double_t _wtd_int_sum Double_t _sum_wgts Double_t _chi_sum Double_t _chisq Double_t _result Double_t _sigma UInt_t _it_start UInt_t _it_num UInt_t _samples UInt_t _calls_per_box public:
static const RooMCIntegrator::SamplingMode Importance static const RooMCIntegrator::SamplingMode ImportanceOnly static const RooMCIntegrator::SamplingMode Stratified static const RooMCIntegrator::GeneratorType QuasiRandom static const RooMCIntegrator::GeneratorType PseudoRandom static const RooMCIntegrator::Stage AllStages static const RooMCIntegrator::Stage ReuseGrid static const RooMCIntegrator::Stage RefineGrid

Class Description


RooMCIntegrator()
 Dummy default ctor

RooMCIntegrator(const RooAbsFunc& function, SamplingMode mode, GeneratorType genType, Bool_t verbose) : RooAbsIntegrator(function), _grid(function), _verbose(verbose), _alpha(1.5), _mode(mode), _genType(genType), _nRefineIter(5),_nRefinePerDim(1000),_nIntegratePerDim(5000)
 check that our grid initialized without errors

RooMCIntegrator(const RooAbsFunc& function, const RooNumIntConfig& config) : RooAbsIntegrator(function), _grid(function)

RooAbsIntegrator* clone(const RooAbsFunc& function, const RooNumIntConfig& config) const

~RooMCIntegrator()

Bool_t checkLimits() const
 Check if we can integrate over the current domain.

Double_t integral(const Double_t* /*yvec*/)
 Evaluate the integral using a fixed number of calls to evaluate the integrand
 equal to about 10k per dimension. Use the first 5k calls to refine the grid
 over 5 iterations of 1k calls each, and the remaining 5k calls for a single
 high statistics integration.

Double_t vegas(Stage stage, UInt_t calls, UInt_t iterations, Double_t *absError)
 Perform one step of Monte Carlo integration using the specified number of iterations
 with (approximately) the specified number of integrand evaluation calls per iteration.
 Use the VEGAS algorithm, starting from the specified stage. Returns the best estimate
 of the integral. Also sets *absError to the estimated absolute error of the integral
 estimate if absError is non-zero.



Inline Functions


                              Double_t getAlpha() const
                                  void setAlpha(Double_t alpha)
        RooMCIntegrator::GeneratorType getGenType() const
                                  void setGenType(RooMCIntegrator::GeneratorType type)
                        const RooGrid& grid() const
                                Bool_t canIntegrate1D() const
                                Bool_t canIntegrate2D() const
                                Bool_t canIntegrateND() const
                                Bool_t canIntegrateOpenEnded() const
                               TClass* Class()
                               TClass* IsA() const
                                  void ShowMembers(TMemberInspector& insp, char* parent)
                                  void Streamer(TBuffer& b)
                                  void StreamerNVirtual(TBuffer& b)
                       RooMCIntegrator RooMCIntegrator(const RooMCIntegrator&)


Last update: Tue Jun 28 18:13:30 2005
Copyright (c) 2000-2005, Regents of the University of California *


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