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# eoInit.h

    00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
    00002
    00003 //-----------------------------------------------------------------------------
    00004 // eoInit.h
    00005 // (c) Maarten Keijzer 2000, GeNeura Team, 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 _eoInit_H
    00028 #define _eoInit_H
    00029
    00030 #include <algorithm>
    00031
    00032 #include <eoOp.h>
    00033 #include <eoSTLFunctor.h>
    00034 #include <utils/eoRndGenerators.h>
    00035
    00044 template <class EOT>
    00045 class eoInit : public eoUF<EOT&, void>
    00046 {
    00047 public:
    00048
    00052   virtual std::string className(void) const { return "eoInit"; }
    00053 };
    00054
    00059 template <class EOT>
    00060 class eoInitGenerator :  public eoF<EOT>
    00061 {
    00062 public:
    00063
    00065   eoInitGenerator(eoInit<EOT> & _init):init(_init) {}
    00066
    00067   virtual EOT operator()()
    00068     {
    00069       EOT p;
    00070       init(p);
    00071       return (p);
    00072     }
    00073 private:
    00074   eoInit<EOT> & init;
    00075 };
    00076
    00080 template <class EOT>
    00081 class eoInitFixedLength: public eoInit<EOT>
    00082 {
    00083     public:
    00084
    00085     typedef typename EOT::AtomType AtomType;
    00086
    00087         eoInitFixedLength(unsigned _combien, eoRndGenerator<AtomType>& _generator)
    00088             : combien(_combien), generator(_generator) {}
    00089
    00090         virtual void operator()(EOT& chrom)
    00091         {
    00092             chrom.resize(combien);
    00093             std::generate(chrom.begin(), chrom.end(), generator);
    00094             chrom.invalidate();
    00095         }
    00096
    00097     private :
    00098         unsigned combien;
    00100         eoSTLF<AtomType> generator;
    00101 };
    00102
    00106 template <class EOT>
    00107 class eoInitVariableLength: public eoInit<EOT>
    00108 {
    00109 public:
    00110 typedef typename EOT::AtomType AtomType;
    00111
    00112 //   /** Ctor from a generator */
    00113 //   eoInitVariableLength(unsigned _minSize, unsigned _maxSize, eoF<typename EOT::AtomType> & _generator = Gen())
    00114 //     : offset(_minSize), extent(_maxSize - _minSize),
    00115 //                       repGenerator( eoInitGenerator<typename EOT::AtomType>(*(new eoInit<EOT>)) ),
    00116 //                       generator(_generator)
    00117 //   {
    00118 //     if (_minSize >= _maxSize)
    00119 //       throw std::logic_error("eoInitVariableLength: minSize larger or equal to maxSize");
    00120 //   }
    00121
    00123   eoInitVariableLength(unsigned _minSize, unsigned _maxSize, eoInit<AtomType> & _init)
    00124     : offset(_minSize), extent(_maxSize - _minSize), init(_init)
    00125   {
    00126     if (_minSize >= _maxSize)
    00127       throw std::logic_error("eoInitVariableLength: minSize larger or equal to maxSize");
    00128   }
    00129
    00130
    00131   virtual void operator()(EOT& _chrom)
    00132   {
    00133     _chrom.resize(offset + rng.random(extent));
    00134     typename std::vector<AtomType>::iterator it;
    00135     for (it=_chrom.begin(); it<_chrom.end(); it++)
    00136       init(*it);
    00137     _chrom.invalidate();
    00138   }
    00139
    00140   // accessor to the atom initializer (needed by operator constructs sometimes)
    00141   eoInit<AtomType> & atomInit() {return init;}
    00142
    00143 private :
    00144   unsigned offset;
    00145   unsigned extent;
    00146   eoInit<AtomType> & init;
    00147 };
    00148
    00156 template <class EOT>
    00157 class eoInitAdaptor : public eoMonOp<EOT>
    00158 {
    00159     public :
    00160         eoInitAdaptor(eoInit<EOT>& _init) : init(_init) {}
    00161
    00162         bool operator()(EOT& _eot)
    00163         {
    00164             init(_eot);
    00165             return true;
    00166         }
    00167     private :
    00168
    00169         eoInit<EOT>& init;
    00170 };
    00171
    00172 #endif