ROOT::Minuit2::MnHesse Class Reference

Description

API class for calculating the numerical covariance matrix (== 2x Inverse Hessian == 2x Inverse 2nd derivative); can be used by the user or Minuit itself

Definition at line 40 of file MnHesse.h.

Collaboration diagram for ROOT::Minuit2::MnHesse:

Public Member Functions
	MnHesse ()
	default constructor with default strategy More...
	MnHesse (const MnStrategy &stra)
	conctructor with specific strategy More...
	MnHesse (unsigned int stra)
	constructor with user-defined strategy level More...
	~MnHesse ()
unsigned int	Ncycles () const
	forward interface of MnStrategy More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameters &, const MnUserCovariance &, unsigned int maxcalls=0) const
	FCN + MnUserParameters + MnUserCovariance. More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameters &, unsigned int maxcalls=0) const
	high-level API More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameterState &, unsigned int maxcalls=0) const
	FCN + MnUserParameterState. More...
MnUserParameterState	operator() (const FCNBase &, const std::vector< double > &, const MnUserCovariance &, unsigned int maxcalls=0) const
	FCN + parameters + MnUserCovariance. More...
MnUserParameterState	operator() (const FCNBase &, const std::vector< double > &, const std::vector< double > &, unsigned int maxcalls=0) const
	low-level API More...
MnUserParameterState	operator() (const FCNBase &, const std::vector< double > &, unsigned int nrow, const std::vector< double > &, unsigned int maxcalls=0) const
	FCN + parameters + covariance. More...
void	operator() (const FCNBase &, FunctionMinimum &, unsigned int maxcalls=0) const
	API to use MnHesse after minimization when function mimimum is avalilable, otherwise information on the last state will be lost. (It would be needed to re-call the gradient and spend extra useless function calls) The Function Minimum is updated (modified) by adding the Hesse results as last state of minimization. More...
MinimumState	operator() (const MnFcn &, const MinimumState &, const MnUserTransformation &, unsigned int maxcalls=0) const
	internal interface More...
double	TolerG2 () const
double	Tolerstp () const

Private Attributes
MnStrategy	fStrategy

Constructor & Destructor Documentation

MnHesse() [1/3]

ROOT::Minuit2::MnHesse::MnHesse ( )

inline

default constructor with default strategy

Definition at line 45 of file MnHesse.h.

: fStrategy(MnStrategy(1)) {}

MnHesse() [2/3]

ROOT::Minuit2::MnHesse::MnHesse ( unsigned int  stra )

inline

constructor with user-defined strategy level

Definition at line 48 of file MnHesse.h.

: fStrategy(MnStrategy(stra)) {}

MnHesse() [3/3]

ROOT::Minuit2::MnHesse::MnHesse ( const MnStrategy &  stra )

inline

conctructor with specific strategy

Definition at line 51 of file MnHesse.h.

: fStrategy(stra) {}

~MnHesse()

ROOT::Minuit2::MnHesse::~MnHesse ( )

inline

Definition at line 53 of file MnHesse.h.

{}

Member Function Documentation

Ncycles()

unsigned int ROOT::Minuit2::MnHesse::Ncycles ( ) const

inline

forward interface of MnStrategy

Definition at line 86 of file MnHesse.h.

{return fStrategy.HessianNCycles();}

References fStrategy, and ROOT::Minuit2::MnStrategy::HessianNCycles().

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operator()() [1/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const MnUserParameters &	,
		const MnUserCovariance &	,
		unsigned int	maxcalls = 0
	)		const

FCN + MnUserParameters + MnUserCovariance.

operator()() [2/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const MnUserParameters &	,
		unsigned int	maxcalls = 0
	)		const

high-level API

FCN + MnUserParameters

operator()() [3/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const MnUserParameterState &	,
		unsigned int	maxcalls = 0
	)		const

FCN + MnUserParameterState.

operator()() [4/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const std::vector< double > &	,
		const MnUserCovariance &	,
		unsigned int	maxcalls = 0
	)		const

FCN + parameters + MnUserCovariance.

operator()() [5/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const std::vector< double > &	,
		const std::vector< double > &	,
		unsigned int	maxcalls = 0
	)		const

low-level API

FCN + parameters + errors

operator()() [6/8]

MnUserParameterState ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		const std::vector< double > &	,
		unsigned int	nrow,
		const std::vector< double > &	,
		unsigned int	maxcalls = 0
	)		const

FCN + parameters + covariance.

operator()() [7/8]

void ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	,
		FunctionMinimum &	,
		unsigned int	maxcalls = 0
	)		const

API to use MnHesse after minimization when function mimimum is avalilable, otherwise information on the last state will be lost. (It would be needed to re-call the gradient and spend extra useless function calls) The Function Minimum is updated (modified) by adding the Hesse results as last state of minimization.

operator()() [8/8]

MinimumState ROOT::Minuit2::MnHesse::operator()	(	const MnFcn &	,
		const MinimumState &	,
		const MnUserTransformation &	,
		unsigned int	maxcalls = 0
	)		const

internal interface

TolerG2()

double ROOT::Minuit2::MnHesse::TolerG2 ( ) const

inline

Definition at line 88 of file MnHesse.h.

{return fStrategy.HessianG2Tolerance();}

References fStrategy, and ROOT::Minuit2::MnStrategy::HessianG2Tolerance().

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Tolerstp()

double ROOT::Minuit2::MnHesse::Tolerstp ( ) const

inline

Definition at line 87 of file MnHesse.h.

{return fStrategy.HessianStepTolerance();}

References fStrategy, and ROOT::Minuit2::MnStrategy::HessianStepTolerance().

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Member Data Documentation

fStrategy

MnStrategy ROOT::Minuit2::MnHesse::fStrategy

private

Definition at line 92 of file MnHesse.h.

Referenced by Ncycles(), TolerG2(), and Tolerstp().

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

• /home/build/builds/o5h8MZZm/0/mlz/bornagain/Fit/3rdparty/RootMinimizers/Minuit2/MnHesse.h