ROOT::Minuit2::MnHesse Class Reference

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.

Public Member Functions
	MnHesse ()
	default constructor with default strategy More...
	MnHesse (unsigned int stra)
	constructor with user-defined strategy level More...
	MnHesse (const MnStrategy &stra)
	conctructor with specific strategy More...
	~MnHesse ()
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...
MnUserParameterState	operator() (const FCNBase &, const std::vector< double > &, const MnUserCovariance &, unsigned int maxcalls=0) const
	FCN + parameters + MnUserCovariance. More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameters &, unsigned int maxcalls=0) const
	high-level API More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameters &, const MnUserCovariance &, unsigned int maxcalls=0) const
	FCN + MnUserParameters + MnUserCovariance. More...
MnUserParameterState	operator() (const FCNBase &, const MnUserParameterState &, unsigned int maxcalls=0) const
	FCN + MnUserParameterState. 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. More...
MinimumState	operator() (const MnFcn &, const MinimumState &, const MnUserTransformation &, unsigned int maxcalls=0) const
	internal interface More...
unsigned int	Ncycles () const
	forward interface of MnStrategy More...
double	Tolerstp () const
double	TolerG2 () const

Private Attributes
MnStrategy	fStrategy

#include <Minuit2/MnHesse.h>

Collaboration diagram for ROOT::Minuit2::MnHesse:

Constructor & Destructor Documentation

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

inline

default constructor with default strategy

Definition at line 45 of file MnHesse.h.

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

inline

constructor with user-defined strategy level

Definition at line 48 of file MnHesse.h.

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

inline

conctructor with specific strategy

Definition at line 51 of file MnHesse.h.

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

inline

Definition at line 53 of file MnHesse.h.

Member Function Documentation

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

inline

forward interface of MnStrategy

Definition at line 86 of file MnHesse.h.

Referenced by operator()().

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

low-level API

FCN + parameters + errors

Definition at line 38 of file MnHesse.cxx.

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

FCN + parameters + covariance.

Definition at line 43 of file MnHesse.cxx.

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

FCN + parameters + MnUserCovariance.

Definition at line 48 of file MnHesse.cxx.

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

high-level API

FCN + MnUserParameters

Definition at line 53 of file MnHesse.cxx.

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

FCN + MnUserParameters + MnUserCovariance.

Definition at line 58 of file MnHesse.cxx.

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

FCN + MnUserParameterState.

Definition at line 63 of file MnHesse.cxx.

void ROOT::Minuit2::MnHesse::operator()	(	const FCNBase &	fcn,
		FunctionMinimum &	min,
		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

Definition at line 79 of file MnHesse.cxx.

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

internal interface

Definition at line 88 of file MnHesse.cxx.

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

inline

Definition at line 88 of file MnHesse.h.

Referenced by operator()().

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

inline

Definition at line 87 of file MnHesse.h.

Referenced by operator()().

Member Data Documentation

MnStrategy ROOT::Minuit2::MnHesse::fStrategy

private

Definition at line 92 of file MnHesse.h.

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

---

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

• math/minuit2/inc/Minuit2/MnHesse.h
• math/minuit2/src/MnHesse.cxx