67 lines
2.1 KiB
C++
67 lines
2.1 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// eoStochTournamentSelect.h
|
|
// (c) GeNeura Team, 1998 - EEAAX 1999
|
|
/*
|
|
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
|
|
*/
|
|
|
|
#ifndef eoStochTournamentSelect_h
|
|
#define eoStochTournamentSelect_h
|
|
|
|
#include <functional>
|
|
#include <numeric> // accumulate
|
|
#include <eoSelectOne.h> // eoSelectOne
|
|
#include <utils/selectors.h> // stochastic_tournament
|
|
|
|
/** eoStochTournamentSelect: a selection method that selects ONE individual by
|
|
binary stochastic tournament
|
|
-MS- 24/10/99
|
|
|
|
@ingroup Selectors
|
|
*/
|
|
template <class EOT> class eoStochTournamentSelect: public eoSelectOne<EOT>
|
|
{
|
|
public:
|
|
|
|
///
|
|
eoStochTournamentSelect(double _Trate = 1.0 ) : eoSelectOne<EOT>(), 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;
|
|
}
|
|
}
|
|
|
|
/** Perform the stochastic tournament */
|
|
virtual const EOT& operator()(const eoPop<EOT>& pop)
|
|
{
|
|
return stochastic_tournament(pop, Trate);
|
|
}
|
|
|
|
private:
|
|
double Trate;
|
|
};
|
|
|
|
#endif
|