VariableMetricMinimizer.h

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// @(#)root/minuit2:$Id$
// Authors: M. Winkler, F. James, L. Moneta, A. Zsenei   2003-2005
 
/**********************************************************************
 *                                                                    *
 * Copyright (c) 2005 LCG ROOT Math team,  CERN/PH-SFT                *
 *                                                                    *
 **********************************************************************/
 
#ifndef ROOT_Minuit2_VariableMetricMinimizer
#define ROOT_Minuit2_VariableMetricMinimizer
 
#include "Minuit2/MnConfig.h"
#include "Minuit2/ModularFunctionMinimizer.h"
#include "Minuit2/MnSeedGenerator.h"
#include "Minuit2/VariableMetricBuilder.h"
 
namespace ROOT {
 
   namespace Minuit2 {
 
      class BFGSMinimizerType {};
 
//______________________________________________________________________________
/**
    Instantiates the SeedGenerator and MinimumBuilder for
    Variable Metric Minimization method.
    API is provided in the upper ROOT::Minuit2::ModularFunctionMinimizer class
 
 */
 
 
 
class VariableMetricMinimizer : public ModularFunctionMinimizer {
 
   
 
public:
 
   class BFGSType {};
 
   VariableMetricMinimizer() : fMinSeedGen(MnSeedGenerator()),
                               fMinBuilder(VariableMetricBuilder()) {}
 
    VariableMetricMinimizer(BFGSType) :
       fMinSeedGen(MnSeedGenerator()),
       fMinBuilder(VariableMetricBuilder(VariableMetricBuilder::kBFGS)) {}
 
   ~VariableMetricMinimizer() {}
 
   const MinimumSeedGenerator& SeedGenerator() const {return fMinSeedGen;}
   const MinimumBuilder& Builder() const {return fMinBuilder;}
   MinimumBuilder& Builder()  {return fMinBuilder;}
 
private:
 
   MnSeedGenerator fMinSeedGen;
   VariableMetricBuilder fMinBuilder;
};
 
  }  // namespace Minuit2
 
}  // namespace ROOT
 
#endif  // ROOT_Minuit2_VariableMetricMinimizer