root/Minuit2/MnFumiliMinimize.h

0001 // @(#)root/minuit2:$Id$
0002 // Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
0003
0004 /**********************************************************************
0005  *                                                                    *
0006  * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
0007  *                                                                    *
0008  **********************************************************************/
0009
0010 #ifndef ROOT_Minuit2_MnFumiliMinimize
0011 #define ROOT_Minuit2_MnFumiliMinimize
0012
0013 #include "Minuit2/MnApplication.h"
0014 #include "Minuit2/FumiliMinimizer.h"
0015 #include "Minuit2/FumiliFCNBase.h"
0016
0017 #include <vector>
0018
0019 namespace ROOT {
0020
0021 namespace Minuit2 {
0022
0023 // class FumiliFCNBase;
0024 // class FCNBase;
0025
0026 //___________________________________________________________________________
0027 /**
0028
0029
0030 API class for minimization using Fumili technology;
0031 allows for user interaction: set/change parameters, do minimization,
0032 change parameters, re-do minimization etc.;
0033 also used by MnMinos and MnContours;
0034
0035
0036  */
0037
0038 class MnFumiliMinimize : public MnApplication {
0039
0040 public:
0041    /// construct from FumiliFCNBase + MnUserParameterState + MnStrategy
0042    MnFumiliMinimize(const FumiliFCNBase &fcn, const MnUserParameterState &par, const MnStrategy &str = MnStrategy{1})
0043       : MnApplication(fcn, MnUserParameterState(par), str), fMinimizer(FumiliMinimizer()), fFCN(fcn)
0044    {
0045    }
0046
0047    MnFumiliMinimize(const MnFumiliMinimize &migr)
0048       : MnApplication(migr.Fcnbase(), migr.State(), migr.Strategy(), migr.NumOfCalls()), fMinimizer(migr.fMinimizer),
0049         fFCN(migr.Fcnbase())
0050    {
0051    }
0052
0053    FumiliMinimizer &Minimizer() override { return fMinimizer; }
0054    const FumiliMinimizer &Minimizer() const override { return fMinimizer; }
0055
0056    const FumiliFCNBase &Fcnbase() const override { return fFCN; }
0057
0058    /// overwrite Minimize to use FumiliFCNBase
0059    FunctionMinimum operator()(unsigned int = 0, double = 0.1) override;
0060
0061 private:
0062    FumiliMinimizer fMinimizer;
0063    const FumiliFCNBase &fFCN;
0064
0065 private:
0066    // forbidden assignment of migrad (const FumiliFCNBase& = )
0067    MnFumiliMinimize &operator=(const MnFumiliMinimize &) { return *this; }
0068 };
0069
0070 } // namespace Minuit2
0071
0072 } // namespace ROOT
0073
0074 #endif // ROOT_Minuit2_MnFumiliMinimize