Ajout du fitness cloud sampling

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1791 331e1502-861f-0410-8da2-ba01fb791d7f

trunk/paradiseo-mo/src/continuator/moNeighborFitnessStat.h

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+/*
+  <moNeighborFitnessStat.h>
+  Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
+
+  Sebastien Verel, Arnaud Liefooghe, Jeremie Humeau
+
+  This software is governed by the CeCILL license under French law and
+  abiding by the rules of distribution of free software.  You can  use,
+  modify and/ or redistribute the software under the terms of the CeCILL
+  license as circulated by CEA, CNRS and INRIA at the following URL
+  "http://www.cecill.info".
+
+  As a counterpart to the access to the source code and  rights to copy,
+  modify and redistribute granted by the license, users are provided only
+  with a limited warranty  and the software's author,  the holder of the
+  economic rights,  and the successive licensors  have only  limited liability.
+
+  In this respect, the user's attention is drawn to the risks associated
+  with loading,  using,  modifying and/or developing or reproducing the
+  software by the user in light of its specific status of free software,
+  that may mean  that it is complicated to manipulate,  and  that  also
+  therefore means  that it is reserved for developers  and  experienced
+  professionals having in-depth computer knowledge. Users are therefore
+  encouraged to load and test the software's suitability as regards their
+  requirements in conditions enabling the security of their systems and/or
+  data to be ensured and,  more generally, to use and operate it in the
+  same conditions as regards security.
+  The fact that you are presently reading this means that you have had
+  knowledge of the CeCILL license and that you accept its terms.
+
+  ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+  Contact: paradiseo-help@lists.gforge.inria.fr
+*/
+
+#ifndef moNeighborFitnessStat_h
+#define moNeighborFitnessStat_h
+
+#include <continuator/moStat.h>
+#include <neighborhood/moNeighborhood.h>
+#include <eval/moEval.h>
+
+/**
+ * Compute the fitness of one random neighbor
+ */
+template< class Neighbor >
+class moNeighborFitnessStat : public moStat<typename Neighbor::EOT, typename Neighbor::EOT::Fitness>
+{
+public :
+  typedef typename Neighbor::EOT EOT ;
+  typedef moNeighborhood<Neighbor> Neighborhood ;
+  typedef typename EOT::Fitness Fitness ;
+
+  using moStat< EOT, Fitness >::value;
+
+  /**
+   * Default Constructor
+   * @param _neighborhood a neighborhood
+   * @param _eval an evaluation function
+   */
+  moNeighborFitnessStat(Neighborhood& _neighborhood, moEval<Neighbor>& _eval):
+    moStat<EOT, Fitness>(Fitness(), "neighborhood"),
+    neighborhood(_neighborhood), eval(_eval)
+  {
+    if (!neighborhood.isRandom()) {
+      std::cout << "moNeighborFitnessStat::Warning -> the neighborhood used is not random, the neighbor will not be random" << std::endl;
+    }   
+  }
+
+  /**
+   * Compute the fitness of one random neighbor
+   * @param _solution the first solution
+   */
+  virtual void init(EOT & _solution) {
+    operator()(_solution);
+  }
+
+  /**
+   * Compute the fitness of one random neighbor
+   * @param _solution the corresponding solution
+   */
+  virtual void operator()(EOT & _solution) {
+    if (neighborhood.hasNeighbor(_solution)) {
+      Neighbor current ;
+
+      //init the first neighbor which is suppoed to be random
+      neighborhood.init(_solution, current);
+
+      //eval the _solution moved with the neighbor and stock the result in the neighbor
+      eval(_solution, current);
+
+      // the fitness value is collected
+      value() = current.fitness();
+    } else {
+      //if _solution hasn't neighbor,
+      value() = Fitness();
+    }
+  }
+
+  /**
+   * @return the class name
+   */
+  virtual std::string className(void) const {
+    return "moNeighborFitnessStat";
+  }
+
+private:
+  // to explore the neighborhood
+  Neighborhood& neighborhood ;
+  moEval<Neighbor>& eval;
+
+};
+
+#endif