pade.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_PADE_H
#define PAGMO_ALGORITHM_PADE_H

#include "../config.h"
#include "../serialization.h"
#include "base.h"
#include "jde.h"
#include "../problem/decompose.h"



namespace pagmo { namespace algorithm {


class __PAGMO_VISIBLE pade: public base
{
public:
        enum weight_generation_type {
            RANDOM=0, 
            GRID=1,
            LOW_DISCREPANCY=2 
        };
        pade(
                 int gen=10, 
                 unsigned int max_parallelism = 1, 
                 pagmo::problem::decompose::method_type =  pagmo::problem::decompose::BI,
                 const pagmo::algorithm::base & = pagmo::algorithm::jde(100),
                 population::size_type = 8,
                 weight_generation_type = LOW_DISCREPANCY, 
                 const fitness_vector & = std::vector<double>()
                );
        pade(const pade &);

        base_ptr clone() const;
        void evolve(population &) const;
        std::string get_name() const;
        std::vector<fitness_vector> generate_weights(const unsigned int, const unsigned int) const;

protected:
        std::string human_readable_extra() const;

private:
        void reksum(std::vector<std::vector<double> > &, const std::vector<unsigned int>&, unsigned int, unsigned int, std::vector<double> = std::vector<double>() ) const;
        void compute_neighbours(std::vector<std::vector<int> > &, const std::vector<std::vector <double> > &);
        double distance(pagmo::fitness_vector , pagmo::fitness_vector);
        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<unsigned int &>(m_threads);
                ar & const_cast<pagmo::problem::decompose::method_type &>(m_method);
                ar & const_cast<base_ptr &>(m_solver);
                ar & const_cast<population::size_type &>(m_T);
                ar & const_cast<weight_generation_type &>(m_weight_generation);
                ar & m_z;
        }
        //Number of generations
        const int m_gen;
        const unsigned int m_threads;
        const pagmo::problem::decompose::method_type m_method;
        const base_ptr m_solver;
        const population::size_type m_T;
        const weight_generation_type m_weight_generation;
        fitness_vector m_z;
};

}} //namespaces

BOOST_CLASS_EXPORT_KEY(pagmo::algorithm::pade)

#endif // PAGMO_ALGORITHM_PADE_H