LauMinuit Class Reference

The interface to the Minuit fitter. More...

#include <LauMinuit.hh>

Inheritance diagram for LauMinuit:

Public Member Functions
virtual	~LauMinuit ()=default
	Destructor.
virtual void	initialise (LauFitObject *fitObj, const std::vector< LauParameter * > &parameters)
	Initialise the fitter, setting the information on the parameters. More...
virtual LauFitObject *	getFitObject ()
	Get the object that controls the calculation of the likelihood.
virtual UInt_t	nParameters () const
	Get the total number of fit parameters.
virtual UInt_t	nFreeParameters () const
	Get the number of floating fit parameters.
virtual Bool_t	twoStageFit () const
	Determine whether the two-stage fit is enabled.
virtual void	twoStageFit (Bool_t doTwoStageFit)
	Turn on or off the two stage fit. More...
virtual Bool_t	useAsymmFitErrors () const
	Determine whether calculation of asymmetric errors is enabled.
virtual void	useAsymmFitErrors (Bool_t useAsymmErrors)
	Turn on or off the computation of asymmetric errors (i.e. the MINOS routine) More...
virtual const FitStatus &	minimise ()
	Perform the minimisation of the fit function. More...
virtual void	fixSecondStageParameters ()
	Fix parameters marked as "second stage".
virtual void	releaseSecondStageParameters ()
	Release parameters marked as "second stage".
virtual void	updateParameters ()
	Update the values and errors of the parameters based on the fit minimum.
virtual const TMatrixD &	covarianceMatrix () const
	Retrieve the fit covariance matrix.
Public Member Functions inherited from LauAbsFitter
virtual	~LauAbsFitter ()=default
	Destructor.

Private Member Functions
	LauMinuit (const UInt_t maxPar=100, const LauOutputLevel verbosity=LauOutputLevel::Standard)
	Constructor.
	LauMinuit (const LauMinuit &)=delete
	Copy constructor - private and not implemented.
	LauMinuit (LauMinuit &&)=delete
	Move constructor - private and not implemented.
LauMinuit &	operator= (const LauMinuit &)=delete
	Copy assignment operator - private and not implemented.
LauMinuit &	operator= (LauMinuit &&)=delete
	Move assignment operator - private and not implemented.

Private Attributes
TVirtualFitter *	minuit_ { nullptr }
	The interface to Minuit.
const UInt_t	maxPar_ { 100 }
	The maximum number of parameters.
const LauOutputLevel	outputLevel_ { LauOutputLevel::Standard }
	The verbosity level of the fitter.
std::vector< LauParameter * >	params_
	The fit parameters.
UInt_t	nParams_ { 0 }
	The total number of parameters.
UInt_t	nFreeParams_ { 0 }
	The number of free parameters.
Bool_t	twoStageFit_ { kFALSE }
	Option to perform a two stage fit.
Bool_t	useAsymmFitErrors_ { kFALSE }
	Option to use asymmetric errors.
FitStatus	fitStatus_ { -1, 0.0, 0.0 }
	The status of the fit.
TMatrixD	covMatrix_
	The covariance matrix.

Friends
class	LauFitter
	Allow the factory class to access private methods.

Additional Inherited Members
Protected Member Functions inherited from LauAbsFitter
	LauAbsFitter ()=default
	Constructor.

Detailed Description

The interface to the Minuit fitter.

The singleton interface to the Minuit fitter.

Definition at line 50 of file LauMinuit.hh.

Member Function Documentation

initialise()

void LauMinuit::initialise ( LauFitObject *  fitObj, const std::vector< LauParameter * > &  parameters  )

virtual

Initialise the fitter, setting the information on the parameters.

Parameters

[in]	fitObj	the object that controls the likelihood calculation
[in]	parameters	the list of parameters of the fit

Implements LauAbsFitter.

Definition at line 67 of file LauMinuit.cc.

minimise()

const LauAbsFitter::FitStatus & LauMinuit::minimise ( )

virtual

Perform the minimisation of the fit function.

Returns

the status code of the fit and the minimised value

Implements LauAbsFitter.

Definition at line 159 of file LauMinuit.cc.

twoStageFit()

virtual void LauMinuit::twoStageFit ( Bool_t  doTwoStageFit )

inlinevirtual

Turn on or off the two stage fit.

The two-stage fit allows certain parameters to be fixed in one stage and floated in another stage of the fit. Can be used, for example, in a CP fit where the CP-parameters are fixed to zero in the first stage (while the CP-average parameters are determined), then floated in the second.

Parameters

[in]

doTwoStageFit

boolean specifying whether or not the two-stage fit should be enabled

Implements LauAbsFitter.

Definition at line 86 of file LauMinuit.hh.

useAsymmFitErrors()

virtual void LauMinuit::useAsymmFitErrors ( Bool_t  useAsymmErrors )

inlinevirtual

Turn on or off the computation of asymmetric errors (i.e. the MINOS routine)

Parameters

[in]

useAsymmErrors

boolean specifying whether or not the computation of asymmetric errors is enabled

Implements LauAbsFitter.

Definition at line 95 of file LauMinuit.hh.

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The documentation for this class was generated from the following files:

• /home/epp/phsdba/Development/Laura++/master-dev/laura/inc/LauMinuit.hh
• /home/epp/phsdba/Development/Laura++/master-dev/laura/src/LauMinuit.cc