109 lines
3 KiB
C++
109 lines
3 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoContinue.h
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// (c) Maarten Keijzer, Geneura Team, 1999, 2000
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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 _eoContinue_h
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#define _eoContinue_h
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#include <eoFunctor.h>
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#include <eoPop.h>
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#include <eoPersistent.h>
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/** @defgroup Continuators Stopping criteria
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*
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* A stopping criterion is called a "continue". This is a functor that is called at each generation end
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* and that return true if one should stop the search.
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*
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* @ingroup Utilities
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*/
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/** Termination condition for the genetic algorithm
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* Takes the population as input, returns true for continue,
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* false for termination
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*
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* @ingroup Continuators
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* @ingroup Core
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*/
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template< class EOT>
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class eoContinue : public eoUF<const eoPop<EOT>&, bool>, public eoPersistent
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{
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public:
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virtual std::string className(void) const { return "eoContinue"; }
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/** Read from a stream
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* @param __is istream to read from
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*/
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void readFrom (std :: istream & __is) {
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(void)__is;
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/* It should be implemented by subclasses ! */
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}
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/** Print on a stream
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* @param __os ostream to print on
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*/
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void printOn (std :: ostream & __os) const {
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(void)__os;
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/* It should be implemented by subclasses ! */
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}
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};
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/**
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* Termination condition with a count condition (totalGenerations). This continuator contains
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* a count of cycles, which can be retrieved or set.
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*
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* @ingroup Continuators
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* @ingroup Core
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*/
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template< class EOT >
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class eoCountContinue : public eoContinue< EOT >
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{
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public:
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eoCountContinue( ) :
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thisGenerationPlaceholder( 0 ),
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thisGeneration( thisGenerationPlaceholder )
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{
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// empty
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}
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eoCountContinue( unsigned long& currentGen ) :
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thisGenerationPlaceholder( 0 ),
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thisGeneration( currentGen )
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{
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// empty
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}
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virtual std::string className( void ) const { return "eoCountContinue"; }
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virtual void reset( )
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{
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thisGeneration = 0;
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}
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protected:
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unsigned long thisGenerationPlaceholder;
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unsigned long& thisGeneration;
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};
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#endif
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