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; -*-
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// make_PBILdistrib.h
|
|
// (c) Marc Schoenauer, Maarten Keijzer, 2001
|
|
/*
|
|
This library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2 of the License, or (at your option) any later version.
|
|
|
|
This library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
|
|
Contact: Marc.Schoenauer@polytechnique.fr
|
|
mkeijzer@dhi.dk
|
|
*/
|
|
//-----------------------------------------------------------------------------
|
|
|
|
#ifndef _make_PBILdistrib_h
|
|
#define _make_PBILdistrib_h
|
|
|
|
#include <ctime> // for time(0) for random seeding
|
|
#include <ga/eoPBILOrg.h>
|
|
#include <utils/eoRNG.h>
|
|
#include <utils/eoParser.h>
|
|
#include <utils/eoState.h>
|
|
|
|
|
|
//////////////////////////DISTRIB CONSTRUCTION ///////////////////////////////
|
|
/**
|
|
* Templatized version of parser-based construct of the distribution
|
|
* for PBIL distribution evolution algorithm
|
|
*
|
|
* It must then be instantiated, and compiled on its own for a given EOType
|
|
* (see test/t-eoPBIL.cpp
|
|
*
|
|
* Last argument is template-disambiguating
|
|
*/
|
|
|
|
|
|
template <class EOT>
|
|
eoPBILDistrib<EOT> & do_make_PBILdistrib(eoParser & _parser, eoState& _state, EOT)
|
|
{
|
|
// First the random seed
|
|
eoValueParam<uint32>& seedParam = _parser.createParam(uint32(0), "seed", "Random number seed", 'S');
|
|
if (seedParam.value() == 0)
|
|
seedParam.value() = time(0);
|
|
|
|
// chromosome size:
|
|
unsigned theSize;
|
|
// but it might have been already read in the definition fo the performance
|
|
eoParam* ptParam = _parser.getParamWithLongName(string("chromSize"));
|
|
|
|
if (!ptParam) // not already defined: read it here
|
|
{
|
|
theSize = _parser.createParam(unsigned(10), "chromSize", "The length of the bitstrings", 'n',"Problem").value();
|
|
}
|
|
else // it was read before, get its value
|
|
{
|
|
eoValueParam<unsigned>* ptChromSize = dynamic_cast<eoValueParam<unsigned>*>(ptParam);
|
|
theSize = ptChromSize->value();
|
|
}
|
|
|
|
eoPBILDistrib<EOT> * ptDistrib = new eoPBILDistrib<EOT>(theSize);
|
|
_state.storeFunctor(ptDistrib);
|
|
|
|
// now the initialization: read a previously saved distribution, or random
|
|
eoValueParam<string>& loadNameParam = _parser.createParam(string(""), "Load","A save file to restart from",'L', "Persistence" );
|
|
if (loadNameParam.value() != "") // something to load
|
|
{
|
|
// create another state for reading
|
|
eoState inState; // a state for loading - WITHOUT the parser
|
|
// register the rng and the distribution in the state,
|
|
// so they can be loaded,
|
|
// and the present run will be the exact continuation of the saved run
|
|
// eventually with different parameters
|
|
inState.registerObject(*ptDistrib);
|
|
inState.registerObject(rng);
|
|
inState.load(loadNameParam.value()); // load the distrib and the rng
|
|
}
|
|
else // nothing loaded from a file
|
|
{
|
|
rng.reseed(seedParam.value());
|
|
}
|
|
|
|
// for future stateSave, register the algorithm into the state
|
|
_state.registerObject(_parser);
|
|
_state.registerObject(*ptDistrib);
|
|
_state.registerObject(rng);
|
|
|
|
return *ptDistrib;
|
|
}
|
|
|
|
#endif
|