Go4Fit
Class TGo4FitAmplEstimation

class TGo4FitAmplEstimation

derived from TGo4FitterAction

Amplitude estimation action
In additional to general minimization routine very useful amplitude estimation algorithm can be used. If rest of models parameters have good initial estimation, the amplitude parameter can be defined by solving of system of linear equations, as described in theoretical preface part of tutorial. This algorithm is provided by TGo4FitAmplEstimation class. This action can be added by AddAmplEstimation() routine of fitter. Typically, this action should be added before minimization routine.

Constructor Summary

TGo4FitAmplEstimation()           Default constructor.

TGo4FitAmplEstimation(const char * Name, Int_t NumIters)           Creates TGo4FitAmplEstimation action with given name.

Destructor Summary
virtual synchronized	~TGo4FitAmplEstimation()           Destroys TGo4FitAmplEstimation object.

Method Summary
private Bool_t	CalculateWithBuffers(TGo4Fitter* fitter)
private Bool_t	CalculateWithIterators(TGo4Fitter* fitter)
virtual void	DoAction(TGo4FitterAbstract* Fitter)           Perform amplitude estimations.
Int_t	GetNumIterations()           Returns number of iterations.
virtual const Bool_t	NeedBuffers()
private Double_t	PointWeight(Int_t niter, Int_t FFtype, Double_t value, Double_t modelvalue, Double_t standdev)
virtual const void	Print(Option_t* option)           Print information on standard output.
void	SetNumIterations(Int_t iNumIters)           Sets number of iterations.

Methods inherited from class Go4Fit.TGo4FitterAction

CanChangeFitter

Methods inherited from class Go4Fit.TGo4FitNamed

GetFullName, GetOwner, GetOwnerFullName, SetOwner

Methods inherited from class TNamed

operator=, Clear, Clone, Compare, Copy, FillBuffer, GetName, GetTitle, Hash, IsSortable, SetName, SetNameTitle, SetTitle, ls, Sizeof, Class, Class_Name, Class_Version, Dictionary, IsA, ShowMembers, Streamer, StreamerNVirtual, DeclFileName, ImplFileLine, ImplFileName, DeclFileLine

Field Detail

fiNumIters

private Int_t fiNumIters

Number of iterations, used for amplitude estimation.

public TGo4FitAmplEstimation()

Default constructor.

public TGo4FitAmplEstimation(const char * Name, Int_t NumIters)

Creates TGo4FitAmplEstimation action with given name.
Optinally, default number of iterations can be sets up (default 1).

public virtual synchronized ~TGo4FitAmplEstimation()

Destroys TGo4FitAmplEstimation object.

private Bool_t CalculateWithBuffers(TGo4Fitter* fitter)

private Bool_t CalculateWithIterators(TGo4Fitter* fitter)

public virtual void DoAction(TGo4FitterAbstract* Fitter)

Perform amplitude estimations.
See Go4Fit tutorial to more details.

public Int_t GetNumIterations()

Returns number of iterations.

public virtual const Bool_t NeedBuffers()

private Double_t PointWeight(Int_t niter, Int_t FFtype, Double_t value, Double_t modelvalue, Double_t standdev)

public virtual const void Print(Option_t* option)

Print information on standard output.

public void SetNumIterations(Int_t iNumIters)

Sets number of iterations.