moeoStochTournamentSelect.h

// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-

//-----------------------------------------------------------------------------
// moeoStochTournamentSelect.h
// (c) OPAC Team (LIFL), Dolphin Project (INRIA), 2007
/*
    This library...

    Contact: paradiseo-help@lists.gforge.inria.fr, http://paradiseo.gforge.inria.fr
 */
//-----------------------------------------------------------------------------

#ifndef MOEOSTOCHTOURNAMENTSELECT_H_
#define MOEOSTOCHTOURNAMENTSELECT_H_

#include <comparator/moeoComparator.h>
#include <comparator/moeoFitnessThenDiversityComparator.h>
#include <selection/moeoSelectOne.h>
#include <selection/moeoSelectors.h>

template < class MOEOT > class moeoStochTournamentSelect:public moeoSelectOne <MOEOT>
{
public:

    moeoStochTournamentSelect (moeoComparator < MOEOT > & _comparator, double _tRate = 1.0) : comparator (_comparator), tRate (_tRate)
    {
        // consistency checks
        if (tRate < 0.5)
        {
            std::cerr << "Warning, Tournament rate should be > 0.5\nAdjusted to 0.55\n";
            tRate = 0.55;
        }
        if (tRate > 1)
        {
            std::cerr << "Warning, Tournament rate should be < 1\nAdjusted to 1\n";
            tRate = 1;
        }
    }
    

    moeoStochTournamentSelect (double _tRate = 1.0) : comparator (defaultComparator), tRate (_tRate)
    {
        // consistency checks
        if (tRate < 0.5)
        {
            std::cerr << "Warning, Tournament rate should be > 0.5\nAdjusted to 0.55\n";
            tRate = 0.55;
        }
        if (tRate > 1)
        {
            std::cerr << "Warning, Tournament rate should be < 1\nAdjusted to 1\n";
            tRate = 1;
        }
    }


    const MOEOT & operator() (const eoPop < MOEOT > &_pop)
    {
        // use the selector
        return mo_stochastic_tournament(_pop,tRate,comparator);
    }


protected:

    moeoComparator < MOEOT > & comparator;
    moeoFitnessThenDiversityComparator < MOEOT > defaultComparator;
    double tRate;

};

#endif /*MOEOSTOCHTOURNAMENTSELECT_H_ */

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