129 lines
3.6 KiB
C++
129 lines
3.6 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// eoInit.h
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// (c) Maarten Keijzer 2000, GeNeura Team, 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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Marc.Schoenauer@polytechnique.fr
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mak@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifndef _eoInit_H
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#define _eoInit_H
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#include <algorithm>
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#include <eoOp.h>
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#include <eoSTLFunctor.h>
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#include <utils/eoRndGenerators.h>
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/**
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Base (name) class for Initialization of chromosomes, used in a population
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contructor. It is derived from eoMonOp, so it can be used
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inside the algorithm as well.
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@see eoPop
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*/
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template <class EOT>
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class eoInit : public eoUF<EOT&, void>
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{
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public:
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virtual void operator()(EOT& chrom)
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{ cout << "In the eoInit base class" << endl; }
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};
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/**
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Initializer for fixed length representations with a single type
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*/
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template <class EOT>
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class eoInitFixedLength: public eoInit<EOT>
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{
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public:
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typedef typename EOT::AtomType AtomType;
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eoInitFixedLength(unsigned _combien, eoRndGenerator<AtomType>& _generator)
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: combien(_combien), generator(_generator) {}
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virtual void operator()(EOT& chrom)
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{
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chrom.resize(combien);
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std::generate(chrom.begin(), chrom.end(), generator);
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chrom.invalidate();
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}
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private :
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unsigned combien;
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/// generic wrapper for eoFunctor (s), to make them have the function-pointer style copy semantics
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eoSTLF<AtomType> generator;
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};
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/**
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Initializor for variable length representations with a single type
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*/
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template <class EOT, class Gen>
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class eoInitVariableLength: public eoInit<EOT>
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{
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public:
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eoInitVariableLength(unsigned _minSize, unsigned _maxSize, Gen _generator = Gen())
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: offset(_minSize), extent(_maxSize - _minSize), generator(_generator)
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{
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if (_minSize >= _maxSize)
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throw logic_error("eoInitVariableLength: minSize larger or equal to maxSize");
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}
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virtual void operator()(EOT& chrom)
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{
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chrom.resize(offset + rng.random(extent));
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generate(chrom.begin(), chrom.end(), generator);
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chrom.invalidate();
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}
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private :
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unsigned offset;
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unsigned extent;
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Gen generator;
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};
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/**
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eoInitAdaptor changes the place in the hierarchy
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from eoInit to eoMonOp. This is mainly a type conversion,
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nothing else
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.
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@see eoInit, eoMonOp
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*/
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template <class EOT>
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class eoInitAdaptor : public eoMonOp<EOT>
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{
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public :
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eoInitAdaptor(eoInit<EOT>& _init) : init(_init) {}
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bool operator()(EOT& _eot)
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{
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init(_eot);
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return true;
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}
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private :
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eoInit<EOT>& init;
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};
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#endif
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