101 lines
3.7 KiB
C++
101 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_PBILdistrib.h
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// (c) Marc Schoenauer, Maarten Keijzer, 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: 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_PBILdistrib_h
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#define _make_PBILdistrib_h
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#include <ctime> // for time(0) for random seeding
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#include <ga/eoPBILOrg.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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//////////////////////////DISTRIB CONSTRUCTION ///////////////////////////////
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/**
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* Templatized version of parser-based construct of the distribution
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* for PBIL distribution evolution algorithm
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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 test/t-eoPBIL.cpp
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*
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* Last argument is template-disambiguating
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*/
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template <class EOT>
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eoPBILDistrib<EOT> & do_make_PBILdistrib(eoParser & _parser, eoState& _state, EOT)
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{
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// First the 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() = time(0);
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// chromosome size:
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unsigned theSize;
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// but it might have been already read in the definition fo the performance
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eoParam* ptParam = _parser.getParamWithLongName(std::string("chromSize"));
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if (!ptParam) // not already defined: read it here
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{
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theSize = _parser.createParam(unsigned(10), "chromSize", "The length of the bitstrings", 'n',"Problem").value();
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}
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else // it was read before, get its value
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{
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eoValueParam<unsigned>* ptChromSize = dynamic_cast<eoValueParam<unsigned>*>(ptParam);
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theSize = ptChromSize->value();
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}
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eoPBILDistrib<EOT> * ptDistrib = new eoPBILDistrib<EOT>(theSize);
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_state.storeFunctor(ptDistrib);
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// now the initialization: read a previously saved distribution, or random
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eoValueParam<std::string>& loadNameParam = _parser.createParam(std::string(""), "Load","A save file to restart from",'L', "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 distribution in the state,
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// 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(*ptDistrib);
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inState.registerObject(rng);
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inState.load(loadNameParam.value()); // load the distrib and the rng
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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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// for future stateSave, register the algorithm into the state
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_state.registerObject(_parser);
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_state.registerObject(*ptDistrib);
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_state.registerObject(rng);
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return *ptDistrib;
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}
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#endif
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