RooMinimizerFcn Class Reference

RooMinimizerFcn is an interface to the ROOT::Math::IBaseFunctionMultiDim, a function that ROOT's minimisers use to carry out minimisations.

Definition at line 37 of file RooMinimizerFcn.h.

Public Member Functions
	RooMinimizerFcn (const RooMinimizerFcn &other)
	RooMinimizerFcn (RooAbsReal *funct, RooMinimizer *context)
	~RooMinimizerFcn () override
ROOT::Math::IBaseFunctionMultiDim *	Clone () const override
	Clone a function.
bool	fit (ROOT::Fit::Fitter &fitter) const override
std::string	getFunctionName () const override
	RooMinimizer sometimes needs the name of the minimized function. Implement this in the derived class.
std::string	getFunctionTitle () const override
	RooMinimizer sometimes needs the title of the minimized function. Implement this in the derived class.
ROOT::Math::IMultiGenFunction *	getMultiGenFcn () override
unsigned int	NDim () const override
	Retrieve the dimension of the function.
void	setOffsetting (bool flag) override
	Enable or disable offsetting on the function to be minimized, which enhances numerical precision.
void	setOptimizeConstOnFunction (RooAbsArg::ConstOpCode opcode, bool doAlsoTrackingOpt) override
	This function must be overridden in the derived class to pass on constant term optimization configuration to the function to be minimized.
Public Member Functions inherited from RooAbsMinimizerFcn
	RooAbsMinimizerFcn (const RooAbsMinimizerFcn &other)
	RooAbsMinimizerFcn (RooArgList paramList, RooMinimizer *context)
virtual	~RooAbsMinimizerFcn ()=default
void	ApplyCovarianceMatrix (TMatrixDSym &V)
	Set different external covariance matrix.
void	BackProp (const ROOT::Fit::FitResult &results)
	Put Minuit results back into RooFit objects.
RooMinimizer::Config const &	cfg () const
Int_t	evalCounter () const
RooArgList *	GetConstParamList ()
RooArgList *	GetFloatParamList ()
RooArgList *	GetInitConstParamList ()
RooArgList *	GetInitFloatParamList ()
std::ofstream *	GetLogFile ()
double &	GetMaxFCN ()
unsigned int	getNDim () const
Int_t	GetNumInvalidNLL () const
double	getOffset () const
	Return a possible offset that's applied to the function to separate invalid function values from valid ones.
std::vector< double >	getParameterValues () const
unsigned int	NDim () const
bool	SetLogFile (const char *inLogfile)
	Change the file name for logging of a RooMinimizer of all MINUIT steppings through the parameter space.
void	setOptimizeConst (Int_t flag)
bool	SetPdfParamVal (int index, double value) const
	Set value of parameter i.
virtual bool	Synchronize (std::vector< ROOT::Fit::ParameterSettings > &parameters)
	Like synchronizeParameterSettings, Synchronize informs Minuit through its parameter_settings vector of RooFit parameter properties, but Synchronize can be overridden to e.g.
bool	synchronizeParameterSettings (std::vector< ROOT::Fit::ParameterSettings > &parameters, bool optConst)
	Informs Minuit through its parameter_settings vector of RooFit parameter properties.
void	zeroEvalCount ()
Public Member Functions inherited from ROOT::Math::IBaseFunctionMultiDimTempl< double >
	IBaseFunctionMultiDimTempl ()
virtual	~IBaseFunctionMultiDimTempl ()
	virtual destructor
double	operator() (const double *x) const
	Evaluate the function at a point x[].

Private Member Functions
double	DoEval (const double *x) const override
	Evaluate function given the parameters in x.

Private Attributes
RooAbsReal *	_funct

Additional Inherited Members
Public Types inherited from ROOT::Math::IBaseFunctionMultiDimTempl< double >
typedef double	BackendType
typedef IBaseFunctionMultiDimTempl< double >	BaseFunc
Protected Member Functions inherited from RooAbsMinimizerFcn
void	ClearPdfParamAsymErr (Int_t index)
	Modify PDF parameter error by ordinal index (needed by MINUIT)
void	finishDoEval () const
void	optimizeConstantTerms (bool constStatChange, bool constValChange)
void	printEvalErrors () const
	Print information about why evaluation failed.
void	SetPdfParamErr (Int_t index, double loVal, double hiVal)
	Modify PDF parameter error by ordinal index (needed by MINUIT)
void	SetPdfParamErr (Int_t index, double value)
	Modify PDF parameter error by ordinal index (needed by MINUIT)
Protected Attributes inherited from RooAbsMinimizerFcn
std::unique_ptr< RooArgList >	_constParamList
RooMinimizer *	_context
int	_evalCounter {0}
std::unique_ptr< RooArgList >	_floatParamList
double	_funcOffset {0.}
std::unique_ptr< RooArgList >	_initConstParamList
std::unique_ptr< RooArgList >	_initFloatParamList
std::ofstream *	_logfile = nullptr
double	_maxFCN = -std::numeric_limits<double>::infinity()
unsigned int	_nDim = 0
int	_numBadNLL = 0
bool	_optConst = false

#include </home/sftnight/build/workspace/root-makedoc-v628/rootspi/rdoc/src/v6-28-00-patches/roofit/roofitcore/src/RooMinimizerFcn.h>

Inheritance diagram for RooMinimizerFcn:

Constructor & Destructor Documentation

RooMinimizerFcn() [1/2]

RooMinimizerFcn::RooMinimizerFcn	(	RooAbsReal *	funct,
		RooMinimizer *	context
	)

Definition at line 52 of file RooMinimizerFcn.cxx.

RooMinimizerFcn() [2/2]

RooMinimizerFcn::RooMinimizerFcn

(

const RooMinimizerFcn &

other

)

Definition at line 57 of file RooMinimizerFcn.cxx.

~RooMinimizerFcn()

RooMinimizerFcn::~RooMinimizerFcn ( )

override

Definition at line 62 of file RooMinimizerFcn.cxx.

Member Function Documentation

Clone()

ROOT::Math::IBaseFunctionMultiDim * RooMinimizerFcn::Clone ( ) const

overridevirtual

Clone a function.

Each derived class must implement their version of the Clone method

Implements ROOT::Math::IBaseFunctionMultiDimTempl< double >.

Definition at line 64 of file RooMinimizerFcn.cxx.

DoEval()

double RooMinimizerFcn::DoEval ( const double *  x ) const

overrideprivatevirtual

Evaluate function given the parameters in x.

Implements ROOT::Math::IBaseFunctionMultiDimTempl< double >.

Definition at line 75 of file RooMinimizerFcn.cxx.

fit()

bool RooMinimizerFcn::fit ( ROOT::Fit::Fitter &  fitter ) const

inlineoverridevirtual

Implements RooAbsMinimizerFcn.

Definition at line 53 of file RooMinimizerFcn.h.

getFunctionName()

std::string RooMinimizerFcn::getFunctionName ( ) const

overridevirtual

RooMinimizer sometimes needs the name of the minimized function. Implement this in the derived class.

Implements RooAbsMinimizerFcn.

Definition at line 124 of file RooMinimizerFcn.cxx.

getFunctionTitle()

std::string RooMinimizerFcn::getFunctionTitle ( ) const

overridevirtual

RooMinimizer sometimes needs the title of the minimized function. Implement this in the derived class.

Implements RooAbsMinimizerFcn.

Definition at line 129 of file RooMinimizerFcn.cxx.

getMultiGenFcn()

ROOT::Math::IMultiGenFunction * RooMinimizerFcn::getMultiGenFcn ( )

inlineoverridevirtual

Implements RooAbsMinimizerFcn.

Definition at line 54 of file RooMinimizerFcn.h.

NDim()

unsigned int RooMinimizerFcn::NDim ( ) const

inlineoverridevirtual

Retrieve the dimension of the function.

Implements ROOT::Math::IBaseFunctionMultiDimTempl< double >.

Definition at line 45 of file RooMinimizerFcn.h.

setOffsetting()

void RooMinimizerFcn::setOffsetting ( bool  flag )

overridevirtual

Enable or disable offsetting on the function to be minimized, which enhances numerical precision.

Implements RooAbsMinimizerFcn.

Definition at line 134 of file RooMinimizerFcn.cxx.

setOptimizeConstOnFunction()

void RooMinimizerFcn::setOptimizeConstOnFunction ( RooAbsArg::ConstOpCode  opcode, bool  doAlsoTrackingOpt  )

overridevirtual

This function must be overridden in the derived class to pass on constant term optimization configuration to the function to be minimized.

For a RooAbsArg, this would be RooAbsArg::constOptimizeTestStatistic.

Implements RooAbsMinimizerFcn.

Definition at line 69 of file RooMinimizerFcn.cxx.

Member Data Documentation

_funct

RooAbsReal* RooMinimizerFcn::_funct

private

Definition at line 59 of file RooMinimizerFcn.h.