# make_PBILdistrib.h

    00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
    00002
    00003 //-----------------------------------------------------------------------------
    00004 // make_PBILdistrib.h
    00005 // (c) Marc Schoenauer, Maarten Keijzer, 2001
    00006 /*
    00007     This library is free software; you can redistribute it and/or
    00008     modify it under the terms of the GNU Lesser General Public
    00009     License as published by the Free Software Foundation; either
    00010     version 2 of the License, or (at your option) any later version.
    00011
    00012     This library is distributed in the hope that it will be useful,
    00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
    00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    00015     Lesser General Public License for more details.
    00016
    00017     You should have received a copy of the GNU Lesser General Public
    00018     License along with this library; if not, write to the Free Software
    00019     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    00020
    00021     Contact: Marc.Schoenauer@polytechnique.fr
    00022              mkeijzer@dhi.dk
    00023  */
    00024 //-----------------------------------------------------------------------------
    00025
    00026 #ifndef _make_PBILdistrib_h
    00027 #define _make_PBILdistrib_h
    00028
    00029 #include <ctime>                   // for time(0) for random seeding
    00030 #include <ga/eoPBILOrg.h>
    00031 #include <utils/eoRNG.h>
    00032 #include <utils/eoParser.h>
    00033 #include <utils/eoState.h>
    00034
    00035
    00037
    00048 template <class EOT>
    00049 eoPBILDistrib<EOT> &  do_make_PBILdistrib(eoParser & _parser, eoState& _state, EOT)
    00050 {
    00051   // First the random seed
    00052     eoValueParam<uint32_t>& seedParam = _parser.createParam(uint32_t(0), "seed", "Random number seed", 'S');
    00053     if (seedParam.value() == 0)
    00054         seedParam.value() = time(0);
    00055
    00056     // chromosome size:
    00057     unsigned theSize;
    00058     // but it might have been already read in the definition fo the performance
    00059     eoParam* ptParam = _parser.getParamWithLongName(std::string("chromSize"));
    00060
    00061     if (!ptParam)                          // not already defined: read it here
    00062       {
    00063         theSize = _parser.createParam(unsigned(10), "chromSize", "The length of the bitstrings", 'n',"Problem").value();
    00064       }
    00065     else                                   // it was read before, get its value
    00066       {
    00067         eoValueParam<unsigned>* ptChromSize = dynamic_cast<eoValueParam<unsigned>*>(ptParam);
    00068         theSize = ptChromSize->value();
    00069       }
    00070
    00071     eoPBILDistrib<EOT> * ptDistrib = new eoPBILDistrib<EOT>(theSize);
    00072     _state.storeFunctor(ptDistrib);
    00073
    00074     // now the initialization: read a previously saved distribution, or random
    00075   eoValueParam<std::string>& loadNameParam = _parser.createParam(std::string(""), "Load","A save file to restart from",'L', "Persistence" );
    00076   if (loadNameParam.value() != "") // something to load
    00077     {
    00078       // create another state for reading
    00079       eoState inState;          // a state for loading - WITHOUT the parser
    00080       // register the rng and the distribution in the state,
    00081       // so they can be loaded,
    00082       // and the present run will be the exact continuation of the saved run
    00083       // eventually with different parameters
    00084       inState.registerObject(*ptDistrib);
    00085       inState.registerObject(rng);
    00086       inState.load(loadNameParam.value()); //  load the distrib and the rng
    00087     }
    00088   else                          // nothing loaded from a file
    00089     {
    00090       rng.reseed(seedParam.value());
    00091     }
    00092
    00093   // for future stateSave, register the algorithm into the state
    00094    _state.registerObject(_parser);
    00095    _state.registerObject(*ptDistrib);
    00096    _state.registerObject(rng);
    00097
    00098   return *ptDistrib;
    00099 }
    00100
    00101 #endif