100 lines
3.7 KiB
C++
100 lines
3.7 KiB
C++
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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//-----------------------------------------------------------------------------
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// make_pop.h
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// (c) Maarten Keijzer, Marc Schoenauer and GeNeura Team, 2001
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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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mkeijzer@dhi.dk
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*/
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//-----------------------------------------------------------------------------
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#ifndef _make_pop_h
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#define _make_pop_h
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#include <eoPop.h>
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#include <eoInit.h>
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#include <utils/eoRNG.h>
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#include <utils/eoParser.h>
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#include <utils/eoState.h>
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///////////////////////////////// INIT POP ///////////////////////////////
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/**
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* Templatized version of parser-based construct of the population
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* + other initializations that are NOT representation-dependent.
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*
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* It must then be instantiated, and compiled on its own for a given EOType
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* (see e.g. ga.h and ga.pp in dir ga)
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*/
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template <class EOT>
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eoPop<EOT>& do_make_pop(eoParser & _parser, eoState& _state, eoInit<EOT> & _init)
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{
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// random seed
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eoValueParam<uint32>& seedParam = _parser.createParam(uint32(0), "seed", "Random number seed", 'S');
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if (seedParam.value() == 0)
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seedParam.value() = random_seed();
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eoValueParam<unsigned>& popSize = _parser.createParam(unsigned(20), "popSize", "Population Size", 'P', "Evolution Engine");
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// Either load or initialize
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// create an empty pop and let the state handle the memory
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eoPop<EOT>& pop = _state.takeOwnership(eoPop<EOT>());
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eoValueParam<string>& loadNameParam = _parser.createParam(string(""), "Load","A save file to restart from",'L', "Persistence" );
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eoValueParam<bool> & recomputeFitnessParam = _parser.createParam(false, "recomputeFitness", "Recompute the fitness after re-loading the pop.?", 'r', "Persistence" );
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if (loadNameParam.value() != "") // something to load
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{
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// create another state for reading
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eoState inState; // a state for loading - WITHOUT the parser
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// register the rng and the pop in the state, so they can be loaded,
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// and the present run will be the exact continuation of the saved run
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// eventually with different parameters
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inState.registerObject(pop);
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inState.registerObject(rng);
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inState.load(loadNameParam.value()); // load the pop and the rng
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// the fitness is read in the file:
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// do only evaluate the pop if the fitness has changed
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if (recomputeFitnessParam.value())
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{
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for (unsigned i=0; i<pop.size(); i++)
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pop[i].invalidate();
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}
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}
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else // nothing loaded from a file
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{
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rng.reseed(seedParam.value());
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}
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if (pop.size() < popSize.value()) // missing some guys
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{
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// Init pop from the randomizer: need to use the append function
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pop.append(popSize.value(), _init);
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}
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// for future stateSave, register the algorithm into the state
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_state.registerObject(_parser);
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_state.registerObject(pop);
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_state.registerObject(rng);
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return pop;
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}
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#endif
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