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# partial_mapped_xover.cpp

    00001 /*
    00002 * <partial_mapped_xover.cpp>
    00003 * Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
    00004 * (C) OPAC Team, LIFL, 2002-2007
    00005 *
    00006 * Sebastien Cahon, Alexandru-Adrian Tantar
    00007 *
    00008 * This software is governed by the CeCILL license under French law and
    00009 * abiding by the rules of distribution of free software.  You can  use,
    00010 * modify and/ or redistribute the software under the terms of the CeCILL
    00011 * license as circulated by CEA, CNRS and INRIA at the following URL
    00012 * "http://www.cecill.info".
    00013 *
    00014 * As a counterpart to the access to the source code and  rights to copy,
    00015 * modify and redistribute granted by the license, users are provided only
    00016 * with a limited warranty  and the software's author,  the holder of the
    00017 * economic rights,  and the successive licensors  have only  limited liability.
    00018 *
    00019 * In this respect, the user's attention is drawn to the risks associated
    00020 * with loading,  using,  modifying and/or developing or reproducing the
    00021 * software by the user in light of its specific status of free software,
    00022 * that may mean  that it is complicated to manipulate,  and  that  also
    00023 * therefore means  that it is reserved for developers  and  experienced
    00024 * professionals having in-depth computer knowledge. Users are therefore
    00025 * encouraged to load and test the software's suitability as regards their
    00026 * requirements in conditions enabling the security of their systems and/or
    00027 * data to be ensured and,  more generally, to use and operate it in the
    00028 * same conditions as regards security.
    00029 * The fact that you are presently reading this means that you have had
    00030 * knowledge of the CeCILL license and that you accept its terms.
    00031 *
    00032 * ParadisEO WebSite : http://paradiseo.gforge.inria.fr
    00033 * Contact: paradiseo-help@lists.gforge.inria.fr
    00034 *
    00035 */
    00036
    00037 #include <assert.h>
    00038
    00039 #include <utils/eoRNG.h>
    00040
    00041 #include "partial_mapped_xover.h"
    00042 #include "mix.h"
    00043
    00044 void PartialMappedXover :: repair (Route & __route, unsigned __cut1, unsigned __cut2) {
    00045
    00046   unsigned v [__route.size ()] ; // Number of times a cities are visited ...
    00047
    00048   for (unsigned i = 0 ; i < __route.size () ; i ++)
    00049     v [i] = 0 ;
    00050
    00051   for (unsigned i = 0 ; i < __route.size () ; i ++)
    00052     v [__route [i]] ++ ;
    00053
    00054   std :: vector <unsigned> vert ;
    00055
    00056   for (unsigned i = 0 ; i < __route.size () ; i ++)
    00057     if (! v [i])
    00058       vert.push_back (i) ;
    00059
    00060   mix (vert) ;
    00061
    00062   for (unsigned i = 0 ; i < __route.size () ; i ++)
    00063     if (i < __cut1 || i >= __cut2)
    00064       if (v [__route [i]] > 1) {
    00065         __route [i] = vert.back () ;
    00066         vert.pop_back () ;
    00067       }
    00068 }
    00069
    00070 bool PartialMappedXover :: operator () (Route & __route1, Route & __route2) {
    00071
    00072   unsigned cut1 = rng.random (__route1.size ()), cut2 = rng.random (__route2.size ()) ;
    00073
    00074   if (cut2 < cut1)
    00075     std :: swap (cut1, cut2) ;
    00076
    00077   // Between the cuts
    00078   for (unsigned i = cut1 ; i < cut2 ; i ++)
    00079     std :: swap (__route1 [i], __route2 [i]) ;
    00080
    00081   // Outside the cuts
    00082   repair (__route1, cut1, cut2) ;
    00083   repair (__route2, cut1, cut2) ;
    00084
    00085   __route1.invalidate () ;
    00086   __route2.invalidate () ;
    00087
    00088   return true ;
    00089 }