Main Page | Modules | Namespace List | Class Hierarchy | Alphabetical List | Class List | File List | Namespace Members | Class Members | Related Pages | Search for

# eoRandomSelect.h

    00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
    00002
    00003 //-----------------------------------------------------------------------------
    00004 // eoRandomSelect.h
    00005 // (c) GeNeura Team, 1998 - EEAAX 1999, Maarten Keijzer 2000
    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: todos@geneura.ugr.es, http://geneura.ugr.es
    00022              Marc.Schoenauer@polytechnique.fr
    00023              mak@dhi.dk
    00024  */
    00025 //-----------------------------------------------------------------------------
    00026
    00027 #ifndef eoRandomSelect_h
    00028 #define eoRandomSelect_h
    00029
    00030 //-----------------------------------------------------------------------------
    00037 #include <utils/eoRNG.h>
    00038 #include <eoSelectOne.h>
    00039
    00040 //-----------------------------------------------------------------------------
    00042 //-----------------------------------------------------------------------------
    00043
    00044 template <class EOT> class eoRandomSelect: public eoSelectOne<EOT>
    00045 {
    00046  public:
    00047
    00049   virtual const EOT& operator()(const eoPop<EOT>& _pop)
    00050   {
    00051     return _pop[eo::rng.random(_pop.size())] ;
    00052   }
    00053 };
    00054
    00055 //-----------------------------------------------------------------------------
    00058 //-----------------------------------------------------------------------------
    00059
    00060 template <class EOT> class eoBestSelect: public eoSelectOne<EOT>
    00061 {
    00062  public:
    00063
    00065   virtual const EOT& operator()(const eoPop<EOT>& _pop)
    00066   {
    00067     return _pop.best_element() ;
    00068   }
    00069 };
    00070
    00071 //-----------------------------------------------------------------------------
    00076 //-----------------------------------------------------------------------------
    00077
    00078 template <class EOT> class eoNoSelect: public eoSelectOne<EOT>
    00079 {
    00080  public:
    00083   eoNoSelect(): current(0) {}
    00084
    00085   virtual const EOT& operator()(const eoPop<EOT>& _pop)
    00086   {
    00087     if (current >= _pop.size())
    00088       current=0;
    00089
    00090     current++;
    00091     return _pop[current-1] ;
    00092   }
    00093 private:
    00094   unsigned current;
    00095 };
    00096
    00097 #endif
    00098