DE_Optimizer.h

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//*************************************************************************//
//                                                                         //
//  LibCudaOptimize                                                        //
//  Copyright (C) 2012 Ibislab, University of Parma                        //
//  Authors: Youssef S.G. Nashed, Roberto Ugolotti                         //
//                                                                         //
//  You should have received a copy of the GNU General Public License      //
//  along with this program.  If not, see <http://www.gnu.org/licenses/>   //
//                                                                         //
//*************************************************************************//

#ifndef DE_Optimizer_H
#define DE_Optimizer_H

#include "IOptimizer.h"

/*open the namespace
  this code should be after all the #include lines and before the first line of the code in each file.
  by Hamid. 23/07/2012*/
#ifdef LIBCUDAOPTIMIZE_NAMESPACE
OPEN_NAMESPACE
#endif

// DE behaviour
#define F 0.5f  ///< Standard Value for parameter F
#define CR 0.9f ///< Standard Value for Crossover Rate

typedef enum {
  DE_RANDOM,         
  DE_BEST,           
  DE_TARGET_TO_BEST, 
  DE_MUTATION_NUM    
} DE_MUTATION;       
#define DE_DEFAULT_MUTATION DE_RANDOM ///< mutation type used by default

typedef enum { 
  DE_BINOMIAL,       
  DE_EXPONENTIAL,    
  DE_CROSSOVER_NUM   
} DE_CROSSOVER;
#define DE_DEFAULT_CROSSOVER DE_BINOMIAL ///< crossover type used by default

class DE_Optimizer :
        public virtual IOptimizer
{
protected:

#ifndef PRIVATE_DOXYGEN
        SolutionSet m_trialSolutionSet;
        DE_MUTATION m_mutation;
        DE_CROSSOVER m_crossover;

        float m_F;
        float m_CR;
#endif
        virtual void initSolutions(dim3,dim3);
        virtual void fitnessEvaluation(dim3,dim3,bool first=false);
        virtual void step(dim3,dim3);
        virtual void update(dim3,dim3,bool first=false);
        virtual void findBest();

public:
        DE_Optimizer(EvalFuncPtr fPtr=NULL, unsigned int dn=PROBLEM_DIMENSIONS, unsigned int sn=NUM_SETS, unsigned int pn=NUM_SOLUTIONS);
        virtual ~DE_Optimizer();

        virtual bool init();

        void setF(float f)              {m_F = f;}
        void setCR(float cr)    {m_CR = cr;}
        void setMutation(DE_MUTATION m) {if(m<DE_MUTATION_NUM) m_mutation = m;}
        void setCrossover(DE_CROSSOVER x)       {if(x<DE_CROSSOVER_NUM) m_crossover = x;}
};

/*close the namespace
  this code should be at the end of the file
  by Hamid. 23/07/2012*/
#ifdef LIBCUDAOPTIMIZE_NAMESPACE
CLOSE_NAMESPACE
#endif

#endif