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eodev/eo/src/eoStochTournamentSelect.h
evomarc a998ad0a41 Checking in the name changes in selection procedures.
This impacts on many files, creating new entries in src (the old ones are moved
to obsolete dir), modifying t-eoSymreg.cpp and t-eobin.cpp in test,
as well as gprop.cc and mastermind.cc in app dir (not to mention almost all
files in tutorial:-(
2001-01-05 05:42:08 +00:00

69 lines
2.4 KiB
C++
Executable file

// -*- 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 */
//-----------------------------------------------------------------------------
template <class EOT> class eoStochTournamentSelect: public eoSelectOne<EOT>
{
public:
///
eoStochTournamentSelect(float _Trate = 1.0 ) : eoSelectOne<EOT>(), Trate(_Trate)
{
// consistency check
if (Trate < 0.5) {
cerr << "Warning, Tournament rate should be > 0.5\nAdjusted to 0.55\n";
Trate = 0.55;
}
}
/** Perform the stochastic tournament */
virtual const EOT& operator()(const eoPop<EOT>& pop)
{
return stochastic_tournament(pop, Trate);
}
private:
float Trate;
};
//-----------------------------------------------------------------------------
#endif eoStochTournamentSelect_h