64 lines
2 KiB
C++
64 lines
2 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoGenTerm.h
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// (c) GeNeura Team, 1999
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/*
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: todos@geneura.ugr.es, http://geneura.ugr.es
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*/
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//-----------------------------------------------------------------------------
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#ifndef _EOFITTERM_H
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#define _EOFITTERM_H
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#include <eoTerm.h>
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/** Fitness termination: terminates after a the difference between the
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fitness of the best individual and a maximum fitness to achieve is less
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than certain number called epsilon., i.e., |maximum-fitness|<epsilon
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*/
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template< class EOT>
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class eoFitTerm: public eoTerm<EOT> {
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public:
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/// Ctors/dtors
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eoFitTerm( const float _maximum, const float _epsilon )
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: eoTerm<EOT> (), maximum( _maximum ), epsilon(_epsilon){};
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/// Copy ctor
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eoFitTerm( const eoFitTerm& _t )
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: eoTerm<EOT> ( _t ), maximum( _t.maximum ),
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epsilon(_t.epsilon){};
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///
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virtual ~eoFitTerm() {};
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/** Returns false when a certain number of generations is
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* reached */
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virtual bool operator() ( const eoPop<EOT>& _vEO ) {
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float bestFitness=_vEO[0].fitness();
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float dif=bestFitness-maximum;
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dif=(dif<0)?-dif:dif;
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return (dif>epsilon ) || (bestFitness > maximum);
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}
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private:
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float maximum, epsilon;
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};
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#endif
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