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List of all members | Public Member Functions | Private Attributes | List of all members
ROOT::Minuit2::NumericalDerivator Class Reference

Definition at line 43 of file NumericalDerivator.h.

Public Member Functions

 NumericalDerivator (bool always_exactly_mimic_minuit2=true)
 
 NumericalDerivator (const NumericalDerivator &other)
 
 NumericalDerivator (double step_tolerance, double grad_tolerance, unsigned int ncycles, double error_level, bool always_exactly_mimic_minuit2=true)
 
bool AlwaysExactlyMimicMinuit2 () const
 
std::vector< DerivatorElement > Differentiate (const ROOT::Math::IBaseFunctionMultiDim *function, const double *x, std::span< const ROOT::Fit::ParameterSettings > parameters, std::span< const DerivatorElement > previous_gradient)
 
double DInt2Ext (const ROOT::Fit::ParameterSettings &parameter, double val) const
 
double Ext2int (const ROOT::Fit::ParameterSettings &parameter, double val) const
 
DerivatorElement FastPartialDerivative (const ROOT::Math::IBaseFunctionMultiDim *function, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, const DerivatorElement &previous)
 
double GetValue () const
 
double Int2ext (const ROOT::Fit::ParameterSettings &parameter, double val) const
 
DerivatorElement operator() (const ROOT::Math::IBaseFunctionMultiDim *function, const double *x, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, const DerivatorElement &previous)
 
DerivatorElement PartialDerivative (const ROOT::Math::IBaseFunctionMultiDim *function, const double *x, std::span< const ROOT::Fit::ParameterSettings > parameters, unsigned int i_component, DerivatorElement previous)
 
void SetAlwaysExactlyMimicMinuit2 (bool flag)
 
void SetErrorLevel (double value)
 
void SetGradTolerance (double value)
 
void SetInitialGradient (const ROOT::Math::IBaseFunctionMultiDim *function, std::span< const ROOT::Fit::ParameterSettings > parameters, std::vector< DerivatorElement > &gradient)
 This function was not implemented as in Minuit2.
 
void SetNCycles (unsigned int value)
 
void SetStepTolerance (double value)
 
void SetupDifferentiate (const ROOT::Math::IBaseFunctionMultiDim *function, const double *cx, std::span< const ROOT::Fit::ParameterSettings > parameters)
 This function sets internal state based on input parameters.
 

Private Attributes

bool fAlwaysExactlyMimicMinuit2
 
double fDfmin
 
ROOT::Minuit2::SinParameterTransformation fDoubleLimTrafo
 
double fGradTolerance = 0.1
 
ROOT::Minuit2::SqrtLowParameterTransformation fLowerLimTrafo
 
unsigned int fNCycles = 2
 
ROOT::Minuit2::MnMachinePrecision fPrecision
 
double fStepTolerance = 0.5
 
double fUp = 1
 
ROOT::Minuit2::SqrtUpParameterTransformation fUpperLimTrafo
 
double fVal = 0
 
double fVrysml
 
std::vector< double > fVx
 
std::vector< double > fVxExternal
 
std::vector< double > fVxFValCache
 

#include <Minuit2/NumericalDerivator.h>

Constructor & Destructor Documentation

◆ NumericalDerivator() [1/3]

NumericalDerivator::NumericalDerivator ( bool  always_exactly_mimic_minuit2 = true)
explicit

Definition at line 40 of file NumericalDerivator.cxx.

◆ NumericalDerivator() [2/3]

NumericalDerivator::NumericalDerivator ( const NumericalDerivator &  other)
default

◆ NumericalDerivator() [3/3]

NumericalDerivator::NumericalDerivator ( double  step_tolerance,
double  grad_tolerance,
unsigned int  ncycles,
double  error_level,
bool  always_exactly_mimic_minuit2 = true 
)

Definition at line 45 of file NumericalDerivator.cxx.

Member Function Documentation

◆ AlwaysExactlyMimicMinuit2()

bool ROOT::Minuit2::NumericalDerivator::AlwaysExactlyMimicMinuit2 ( ) const
inline

Definition at line 80 of file NumericalDerivator.h.

◆ Differentiate()

std::vector< DerivatorElement > NumericalDerivator::Differentiate ( const ROOT::Math::IBaseFunctionMultiDim *  function,
const double *  x,
std::span< const ROOT::Fit::ParameterSettings >  parameters,
std::span< const DerivatorElement >  previous_gradient 
)

Definition at line 153 of file NumericalDerivator.cxx.

◆ DInt2Ext()

double NumericalDerivator::DInt2Ext ( const ROOT::Fit::ParameterSettings &  parameter,
double  val 
) const

Definition at line 202 of file NumericalDerivator.cxx.

◆ Ext2int()

double NumericalDerivator::Ext2int ( const ROOT::Fit::ParameterSettings &  parameter,
double  val 
) const

Definition at line 185 of file NumericalDerivator.cxx.

◆ FastPartialDerivative()

DerivatorElement NumericalDerivator::FastPartialDerivative ( const ROOT::Math::IBaseFunctionMultiDim *  function,
std::span< const ROOT::Fit::ParameterSettings >  parameters,
unsigned int  i_component,
const DerivatorElement &  previous 
)

Definition at line 91 of file NumericalDerivator.cxx.

◆ GetValue()

double ROOT::Minuit2::NumericalDerivator::GetValue ( ) const
inline

Definition at line 66 of file NumericalDerivator.h.

◆ Int2ext()

double NumericalDerivator::Int2ext ( const ROOT::Fit::ParameterSettings &  parameter,
double  val 
) const

Definition at line 169 of file NumericalDerivator.cxx.

◆ operator()()

DerivatorElement NumericalDerivator::operator() ( const ROOT::Math::IBaseFunctionMultiDim *  function,
const double *  x,
std::span< const ROOT::Fit::ParameterSettings >  parameters,
unsigned int  i_component,
const DerivatorElement &  previous 
)

Definition at line 145 of file NumericalDerivator.cxx.

◆ PartialDerivative()

DerivatorElement NumericalDerivator::PartialDerivative ( const ROOT::Math::IBaseFunctionMultiDim *  function,
const double *  x,
std::span< const ROOT::Fit::ParameterSettings >  parameters,
unsigned int  i_component,
DerivatorElement  previous 
)

Definition at line 81 of file NumericalDerivator.cxx.

◆ SetAlwaysExactlyMimicMinuit2()

void ROOT::Minuit2::NumericalDerivator::SetAlwaysExactlyMimicMinuit2 ( bool  flag)
inline

Definition at line 81 of file NumericalDerivator.h.

◆ SetErrorLevel()

void ROOT::Minuit2::NumericalDerivator::SetErrorLevel ( double  value)
inline

Definition at line 70 of file NumericalDerivator.h.

◆ SetGradTolerance()

void ROOT::Minuit2::NumericalDerivator::SetGradTolerance ( double  value)
inline

Definition at line 68 of file NumericalDerivator.h.

◆ SetInitialGradient()

void NumericalDerivator::SetInitialGradient ( const ROOT::Math::IBaseFunctionMultiDim *  function,
std::span< const ROOT::Fit::ParameterSettings >  parameters,
std::vector< DerivatorElement > &  gradient 
)

This function was not implemented as in Minuit2.

Now it copies the behavior of InitialGradientCalculator. See https://github.com/roofit-dev/root/issues/10

Definition at line 224 of file NumericalDerivator.cxx.

◆ SetNCycles()

void ROOT::Minuit2::NumericalDerivator::SetNCycles ( unsigned int  value)
inline

Definition at line 69 of file NumericalDerivator.h.

◆ SetStepTolerance()

void ROOT::Minuit2::NumericalDerivator::SetStepTolerance ( double  value)
inline

Definition at line 67 of file NumericalDerivator.h.

◆ SetupDifferentiate()

void NumericalDerivator::SetupDifferentiate ( const ROOT::Math::IBaseFunctionMultiDim *  function,
const double *  cx,
std::span< const ROOT::Fit::ParameterSettings >  parameters 
)

This function sets internal state based on input parameters.

This state setup is used in the actual (partial) derivative calculations.

Definition at line 57 of file NumericalDerivator.cxx.

Member Data Documentation

◆ fAlwaysExactlyMimicMinuit2

bool ROOT::Minuit2::NumericalDerivator::fAlwaysExactlyMimicMinuit2
private

Definition at line 104 of file NumericalDerivator.h.

◆ fDfmin

double ROOT::Minuit2::NumericalDerivator::fDfmin
private

Definition at line 92 of file NumericalDerivator.h.

◆ fDoubleLimTrafo

ROOT::Minuit2::SinParameterTransformation ROOT::Minuit2::NumericalDerivator::fDoubleLimTrafo
private

Definition at line 99 of file NumericalDerivator.h.

◆ fGradTolerance

double ROOT::Minuit2::NumericalDerivator::fGradTolerance = 0.1
private

Definition at line 85 of file NumericalDerivator.h.

◆ fLowerLimTrafo

ROOT::Minuit2::SqrtLowParameterTransformation ROOT::Minuit2::NumericalDerivator::fLowerLimTrafo
private

Definition at line 101 of file NumericalDerivator.h.

◆ fNCycles

unsigned int ROOT::Minuit2::NumericalDerivator::fNCycles = 2
private

Definition at line 103 of file NumericalDerivator.h.

◆ fPrecision

ROOT::Minuit2::MnMachinePrecision ROOT::Minuit2::NumericalDerivator::fPrecision
private

Definition at line 97 of file NumericalDerivator.h.

◆ fStepTolerance

double ROOT::Minuit2::NumericalDerivator::fStepTolerance = 0.5
private

Definition at line 84 of file NumericalDerivator.h.

◆ fUp

double ROOT::Minuit2::NumericalDerivator::fUp = 1
private

Definition at line 86 of file NumericalDerivator.h.

◆ fUpperLimTrafo

ROOT::Minuit2::SqrtUpParameterTransformation ROOT::Minuit2::NumericalDerivator::fUpperLimTrafo
private

Definition at line 100 of file NumericalDerivator.h.

◆ fVal

double ROOT::Minuit2::NumericalDerivator::fVal = 0
private

Definition at line 87 of file NumericalDerivator.h.

◆ fVrysml

double ROOT::Minuit2::NumericalDerivator::fVrysml
private

Definition at line 93 of file NumericalDerivator.h.

◆ fVx

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVx
private

Definition at line 89 of file NumericalDerivator.h.

◆ fVxExternal

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVxExternal
private

Definition at line 90 of file NumericalDerivator.h.

◆ fVxFValCache

std::vector<double> ROOT::Minuit2::NumericalDerivator::fVxFValCache
private

Definition at line 91 of file NumericalDerivator.h.

Libraries for ROOT::Minuit2::NumericalDerivator:
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The documentation for this class was generated from the following files: