eoParetoRanking.h

//-----------------------------------------------------------------------------

#ifndef eoParetoRanking_h
#define eoParetoRanking_h

#include <eoPerf2Worth.h>
#include <eoDominanceMap.h>

template <class EOT>
class eoParetoRanking : public eoPerf2WorthCached<EOT, double>
{
public:

    using eoPerf2WorthCached<EOT, double>::value;

    eoParetoRanking(eoDominanceMap<EOT>& _dominanceMap)
        : eoPerf2WorthCached<EOT, double>(), dominanceMap(_dominanceMap)
        {}

    void calculate_worths(const eoPop<EOT>& _pop)
    {
      dominanceMap(_pop);
      value() = dominanceMap.sum_dominators(); // get rank: 0 means part of current front

      // calculate maximum
      double maxim = *std::max_element(value().begin(), value().end());

      // higher is better, so invert the value
      for (unsigned i = 0; i < value().size(); ++i)
      {
        value()[i] = maxim - value()[i];
      }

    }

  private :

  eoDominanceMap<EOT>& dominanceMap;
};

#endif

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