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Added first batch of pareto based stuff

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maartenkeijzer 2001-03-12 16:04:18 +00:00
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eo/src/eoParetoRanking.h Normal file
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/** -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
-----------------------------------------------------------------------------
eoParetoRanking.h
(c) Maarten Keijzer, Marc Schoenauer, 2001
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Contact: todos@geneura.ugr.es, http://geneura.ugr.es
Marc.Schoenauer@polytechnique.fr
mkeijzer@dhi.dk
*/
//-----------------------------------------------------------------------------
#ifndef eoParetoRanking_h
#define eoParetoRanking_h
#include <eoPerf2Worth.h>
#include <eoDominanceMap.h>
/**
Straightforward pareto ranking. Every individual gets a rank according to the number
of elements it dominates. Note that without niching, this technique will usually not
find the whole front of non-dominated solutions, but will quite likely converge
on a single spot on the front.
*/
template <class EOT>
class eoParetoRanking : public eoPerf2Worth<EOT, double>
{
public :
eoParetoRanking(eoDominanceMap<EOT>& _dominanceMap) :
eoPerf2Worth<EOT, double>(), dominanceMap(_dominanceMap) {}
void operator()(const eoPop<EOT>& _pop)
{
dominanceMap(_pop);
value() = dominanceMap.sum_dominants();
}
private :
eoDominanceMap<EOT>& dominanceMap;
};
#endif