nsga2.h

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 *   Copyright (C) 2004-2015 The PaGMO development team,                     *
 *   Advanced Concepts Team (ACT), European Space Agency (ESA)               *
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#ifndef PAGMO_ALGORITHM_NSGA2_H
#define PAGMO_ALGORITHM_NSGA2_H

#include "../config.h"
#include "../serialization.h"
#include "base.h"


namespace pagmo { namespace algorithm {


class __PAGMO_VISIBLE nsga2: public base
{
public:
        nsga2(int gen=100, double cr = 0.95, double eta_c = 10, double m = 0.01, double eta_m = 50);
        base_ptr clone() const;
        void evolve(population &) const;
        std::string get_name() const;
        
protected:
        std::string human_readable_extra() const;
        
private:
        pagmo::population::size_type tournament_selection(pagmo::population::size_type, pagmo::population::size_type, const pagmo::population&) const;
        void crossover(decision_vector&, decision_vector&, pagmo::population::size_type, pagmo::population::size_type,const pagmo::population&) const;
        void mutate(decision_vector&, const pagmo::population&) const;
        
        friend class boost::serialization::access;
        template <class Archive>
        void serialize(Archive &ar, const unsigned int)
        {
                ar & boost::serialization::base_object<base>(*this);
                ar & const_cast<int &>(m_gen);
                ar & const_cast<double &>(m_cr);
                ar & const_cast<double &>(m_eta_c);
                ar & const_cast<double &>(m_m);
                ar & const_cast<double &>(m_eta_m);
        }
        //Number of generations
        const int m_gen;
        //Crossover rate
        const double m_cr;
        // Ditribution index for crossover
        const double m_eta_c;
        // Mutation rate
        const double m_m;
        // Ditribution index for mutation
        const double m_eta_m;


};

}} //namespaces

BOOST_CLASS_EXPORT_KEY(pagmo::algorithm::nsga2)

#endif // PAGMO_ALGORITHM_NSGA2_H