StandartGenerationSizeStrategy.h

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/***************************************************************************
 *   Copyright (C) 2008-2011 LpzRobots development team                    *
 *    Joerg Weider   <joergweide84 at aol dot com> (robot12)               *
 *    Georg Martius  <georg dot martius at web dot de>                     *
 *    Frank Guettler <guettler at informatik dot uni-leipzig dot de        *
 *    Frank Hesse    <frank at nld dot ds dot mpg dot de>                  *
 *    Ralf Der       <ralfder at mis dot mpg dot de>                       *
 *    Joern Hoffmann <jhoffmann at informatik dot uni-leipzig dot de       *
 *                                                                         *
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#ifndef STANDARTGENERATIONSIZESTRATEGY_H_
#define STANDARTGENERATIONSIZESTRATEGY_H_

//forward declaration
class Generation;

//ga_tools includes
#include "IGenerationSizeStrategy.h"

/**
 * this class calculate the new generation size over the enhancement speed
 */
class StandartGenerationSizeStrategy : public IGenerationSizeStrategy{
public:
        /**
         * constructor
         * @param startSize (int) is the size of the first generation. is needed as basic of the calculation
         * @param numGeneration (int) is the number of generation which the alg. will be create
         */
        StandartGenerationSizeStrategy(int startSize, int numGeneration);

        /**
         * default destructor
         */
        virtual ~StandartGenerationSizeStrategy();

        /**
         * this function calculate the new generation size
         * @param oldGeneration (Generation*) the old generation
         * @return (int) the new generation size
         */
        virtual int calcGenerationSize(Generation* oldGeneration);

protected:
        /**
         * is the first generation over?
         */
        bool m_firstIsSet;

        /**
         * the start size of the first generation
         */
        int m_startSize;

        /**
         * the number of generation
         */
        int m_numGeneration;

        /**
         * the best value of the first generation
         */
        double m_best_first;

        /**
         * the best value of the last generation.
         */
        double m_best_old;

        /**
         * the best value of the new generation.
         */
        double m_best_new;

private:
        /**
         * disable the default constructor
         */
        StandartGenerationSizeStrategy();
};

#endif /* STANDARTGENERATIONSIZESTRATEGY_H_ */