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ROOT::Minuit2::MnSimplex Class Reference

API class for minimization using the Simplex method, which does not need and use the derivatives of the function, but only function values.

More information on the minimization method is available here.

It allows for user interaction: set/change parameters, do minimization, change parameters, re-do minimization etc.;

Definition at line 35 of file MnSimplex.h.

Public Member Functions

 MnSimplex (const FCNBase &fcn, const MnUserParameterState &par, const MnStrategy &str=MnStrategy{1})
 construct from FCNBase + MnUserParameterState + MnStrategy
 MnSimplex (const MnSimplex &migr)
const MnUserCovariance & Covariance () const
virtual const FCNBase & Fcnbase () const
const ModularFunctionMinimizer & Minimizer () const override
ModularFunctionMinimizer & Minimizer () override
unsigned int NumOfCalls () const
virtual FunctionMinimum operator() (unsigned int maxfcn=0, double tolerance=0.1)
 Minimize the function.
const MnUserParameters & Parameters () const
const MnMachinePrecision & Precision () const
MnUserParameterState & State ()
const MnUserParameterState & State () const
const MnStrategy & Strategy () const

Protected Attributes

const FCNBase & fFCN
unsigned int fNumCall
MnUserParameterState fState
MnStrategy fStrategy

Private Member Functions

MnSimplex & operator= (const MnSimplex &)

Private Attributes

SimplexMinimizer fMinimizer

#include <Minuit2/MnSimplex.h>

Inheritance diagram for ROOT::Minuit2::MnSimplex:
ROOT::Minuit2::MnApplication

Constructor & Destructor Documentation

◆ MnSimplex() [1/2]

ROOT::Minuit2::MnSimplex::MnSimplex ( const FCNBase & fcn,
const MnUserParameterState & par,
const MnStrategy & str = MnStrategy{1} )
inline

construct from FCNBase + MnUserParameterState + MnStrategy

Definition at line 39 of file MnSimplex.h.

◆ MnSimplex() [2/2]

ROOT::Minuit2::MnSimplex::MnSimplex ( const MnSimplex & migr)
inline

Definition at line 44 of file MnSimplex.h.

Member Function Documentation

◆ Covariance()

const MnUserCovariance & ROOT::Minuit2::MnApplication::Covariance ( ) const
inlineinherited

Definition at line 62 of file MnApplication.h.

◆ Fcnbase()

virtual const FCNBase & ROOT::Minuit2::MnApplication::Fcnbase ( ) const
inlinevirtualinherited

Reimplemented in ROOT::Minuit2::MnFumiliMinimize.

Definition at line 63 of file MnApplication.h.

◆ Minimizer() [1/2]

const ModularFunctionMinimizer & ROOT::Minuit2::MnSimplex::Minimizer ( ) const
inlineoverridevirtual

Implements ROOT::Minuit2::MnApplication.

Definition at line 50 of file MnSimplex.h.

◆ Minimizer() [2/2]

ModularFunctionMinimizer & ROOT::Minuit2::MnSimplex::Minimizer ( )
inlineoverridevirtual

Implements ROOT::Minuit2::MnApplication.

Definition at line 49 of file MnSimplex.h.

◆ NumOfCalls()

unsigned int ROOT::Minuit2::MnApplication::NumOfCalls ( ) const
inlineinherited

Definition at line 65 of file MnApplication.h.

◆ operator()()

FunctionMinimum ROOT::Minuit2::MnApplication::operator() ( unsigned int maxfcn = 0,
double tolerance = 0.1 )
virtualinherited

Minimize the function.

Parameters
maxfcn: max number of function calls (if = 0) default is used which is set to 200 + 100 * npar + 5 * npar**2
tolerance: value used for terminating iteration procedure. For example, MIGRAD will stop iterating when edm (expected distance from minimum) will be: edm < tolerance * 10**-3 Default value of tolerance used is 0.1

Reimplemented in ROOT::Minuit2::MnFumiliMinimize.

Definition at line 27 of file MnApplication.cxx.

◆ operator=()

MnSimplex & ROOT::Minuit2::MnSimplex::operator= ( const MnSimplex & )
inlineprivate

Definition at line 57 of file MnSimplex.h.

◆ Parameters()

const MnUserParameters & ROOT::Minuit2::MnApplication::Parameters ( ) const
inlineinherited

Definition at line 61 of file MnApplication.h.

◆ Precision()

const MnMachinePrecision & ROOT::Minuit2::MnApplication::Precision ( ) const
inlineinherited

Definition at line 58 of file MnApplication.h.

◆ State() [1/2]

MnUserParameterState & ROOT::Minuit2::MnApplication::State ( )
inlineinherited

Definition at line 59 of file MnApplication.h.

◆ State() [2/2]

const MnUserParameterState & ROOT::Minuit2::MnApplication::State ( ) const
inlineinherited

Definition at line 60 of file MnApplication.h.

◆ Strategy()

const MnStrategy & ROOT::Minuit2::MnApplication::Strategy ( ) const
inlineinherited

Definition at line 64 of file MnApplication.h.

Member Data Documentation

◆ fFCN

const FCNBase& ROOT::Minuit2::MnApplication::fFCN
protectedinherited

Definition at line 68 of file MnApplication.h.

◆ fMinimizer

SimplexMinimizer ROOT::Minuit2::MnSimplex::fMinimizer
private

Definition at line 53 of file MnSimplex.h.

◆ fNumCall

unsigned int ROOT::Minuit2::MnApplication::fNumCall
protectedinherited

Definition at line 71 of file MnApplication.h.

◆ fState

MnUserParameterState ROOT::Minuit2::MnApplication::fState
protectedinherited

Definition at line 69 of file MnApplication.h.

◆ fStrategy

MnStrategy ROOT::Minuit2::MnApplication::fStrategy
protectedinherited

Definition at line 70 of file MnApplication.h.

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