onlynewphenotype.h

free library of genetic algorithms

/*
    cpplibga, free library of genetic algorithms.
    Copyright (C) 2003  Burger Y.A. (aka Jo Kruger)

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Contacts:

   address: planet Terra
   e-mail:  [e-mail]
            [e-mail]
*/

#ifndef __CPPLIBGA_ACCEPTING_ONLYNEWPHENOTYPE_H__
#define __CPPLIBGA_ACCEPTING_ONLYNEWPHENOTYPE_H__

#include <cpplibga/Types.h>

namespace cpplibga
{
    namespace accepting
    {
	class OnlyNewPhenotype
	{
	    public:

                OnlyNewPhenotype() : acount(0), 
                                     rcount(0), 
                                     epsilum(0)
                {
                }

                counter_type getNumberOfAcceptedSolutions() const {return acount;}
                counter_type getNumberOfRejectedSolutions() const {return rcount;}

                double getEpsilum() const {return epsilum;}
                void setEpsilum(double e) {epsilum=e;}

		template<typename S, typename P>
		bool accept(const S& solution,
			    const P& population)
		{
                    typedef typename P::const_iterator Iter;
                
                    Iter end=population.end();
                    
                    for(Iter i=population.begin(); i!=end; ++i)
                    {
                        if(fabs((*i)->calcFitness() - solution.calcFitness()) <= epsilum)
                        {
                            ++rcount;
                            return false;
                        }
                    }
                    
                    ++acount;
                    return true;
		}

            private:

                counter_type acount;
                counter_type rcount;
                double       epsilum;
	};
    }
}

#endif