root/Minuit2/MinimumSeedGenerator.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_MinimumSeedGenerator
0011 #define ROOT_Minuit2_MinimumSeedGenerator
0012
0013 namespace ROOT {
0014
0015 namespace Minuit2 {
0016
0017 class MinimumSeed;
0018 class MnFcn;
0019 class GradientCalculator;
0020 class MnUserParameterState;
0021 class MnStrategy;
0022 class AnalyticalGradientCalculator;
0023
0024 /** base class for seed generators (starting values); the seed generator
0025     prepares initial starting values from the input (MnUserParameterState)
0026     for the minimization;
0027  */
0028
0029 class MinimumSeedGenerator {
0030
0031 public:
0032    virtual ~MinimumSeedGenerator() {}
0033
0034    virtual MinimumSeed
0035    operator()(const MnFcn &, const GradientCalculator &, const MnUserParameterState &, const MnStrategy &) const = 0;
0036
0037    virtual MinimumSeed operator()(const MnFcn &, const AnalyticalGradientCalculator &, const MnUserParameterState &,
0038                                   const MnStrategy &) const = 0;
0039 };
0040
0041 } // namespace Minuit2
0042
0043 } // namespace ROOT
0044
0045 #endif // ROOT_Minuit2_MinimumSeedGenerator