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Reference Guide
MinimumSeedGenerator.h
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1 // @(#)root/minuit2:$Id$
2 // Authors: M. Winkler, F. James, L. Moneta, A. Zsenei 2003-2005
3 
4 /**********************************************************************
5  * *
6  * Copyright (c) 2005 LCG ROOT Math team, CERN/PH-SFT *
7  * *
8  **********************************************************************/
9 
10 #ifndef ROOT_Minuit2_MinimumSeedGenerator
11 #define ROOT_Minuit2_MinimumSeedGenerator
12 
13 namespace ROOT {
14 
15  namespace Minuit2 {
16 
17 
18 class MinimumSeed;
19 class MnFcn;
20 class GradientCalculator;
21 class MnUserParameterState;
22 class MnStrategy;
23 class AnalyticalGradientCalculator;
24 
25 /** base class for seed generators (starting values); the seed generator
26  prepares initial starting values from the input (MnUserParameterState)
27  for the minimization;
28  */
29 
31 
32 public:
33 
34  virtual ~MinimumSeedGenerator() {}
35 
36  virtual MinimumSeed operator()(const MnFcn&, const GradientCalculator&, const MnUserParameterState&, const MnStrategy&) const = 0;
37 
38  virtual MinimumSeed operator()(const MnFcn&, const AnalyticalGradientCalculator&, const MnUserParameterState&, const MnStrategy&) const = 0;
39 };
40 
41  } // namespace Minuit2
42 
43 } // namespace ROOT
44 
45 #endif // ROOT_Minuit2_MinimumSeedGenerator
Namespace for new ROOT classes and functions.
Definition: StringConv.hxx:21
MinimumSeed contains the starting values for the minimization produced by the SeedGenerator.
Definition: MinimumSeed.h:31
virtual MinimumSeed operator()(const MnFcn &, const GradientCalculator &, const MnUserParameterState &, const MnStrategy &) const =0
Wrapper class to FCNBase interface used internally by Minuit.
Definition: MnFcn.h:33
class which holds the external user and/or internal Minuit representation of the parameters and error...
base class for seed generators (starting values); the seed generator prepares initial starting values...
API class for defining three levels of strategies: low (0), medium (1), high (>=2); acts on: Migrad (...
Definition: MnStrategy.h:27
interface class for gradient calculators