library: libRooFit
#include "RooMCIntegrator.h" |
RooMCIntegrator
class description - source file - inheritance tree (.pdf)
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)
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
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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