Ajout d'un simple HC tenant du cas d'égalité dans les best

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@1671 331e1502-861f-0410-8da2-ba01fb791d7f

branches/newMo/src/explorer/moSimpleHCneutralExplorer.h

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+/*
+  <moSimpleHCneutralExplorer.h>
+  Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
+
+  Sébastien Verel, Arnaud Liefooghe, Jérémie 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 _moSimpleHCneutralExplorer_h
+#define _moSimpleHCneutralExplorer_h
+
+#include <explorer/moNeighborhoodExplorer.h>
+#include <comparator/moNeighborComparator.h>
+#include <comparator/moSolNeighborComparator.h>
+
+/**
+ * Explorer for a simple Hill-climbing
+ */
+template< class Neighborhood >
+class moSimpleHCneutralExplorer : public moNeighborhoodExplorer<Neighborhood>
+{
+public:
+    typedef typename Neighborhood::EOT EOT ;
+    typedef typename Neighborhood::Neighbor Neighbor ;
+
+    using moNeighborhoodExplorer<Neighborhood>::neighborhood;
+    using moNeighborhoodExplorer<Neighborhood>::eval;
+
+	/**
+	 * Constructor
+	 * @param _neighborhood the neighborhood
+	 * @param _eval the evaluation function
+	 * @param _comparator a neighbor comparator
+	 */
+ moSimpleHCneutralExplorer(Neighborhood& _neighborhood, 
+			   moEval<Neighbor>& _eval, 
+			   moNeighborComparator<Neighbor>& _neighborComparator, 
+			   moSolNeighborComparator<Neighbor>& _solNeighborComparator) : 
+    moNeighborhoodExplorer<Neighborhood>(_neighborhood, _eval), 
+      neighborComparator(_neighborComparator), solNeighborComparator(_solNeighborComparator) {
+    	isAccept = false;
+    	current=new Neighbor();
+    }
+
+	/**
+	 * Destructor
+	 */
+    ~moSimpleHCneutralExplorer(){
+    	delete current;
+    }
+
+	/**
+	 * empty the vector of best solutions
+	 */
+    virtual void initParam(EOT & solution){
+      // delete all the best solutions
+      bestVector.clear();
+    };
+
+	/**
+	 * empty the vector of best solutions
+	 */
+    virtual void updateParam(EOT & solution){
+      // delete all the best solutions
+      bestVector.clear();
+    };
+
+	/**
+	 * terminate: NOTHING TO DO
+	 */
+    virtual void terminate(EOT & solution){};
+
+    /**
+     * Explore the neighborhood of a solution
+     * @param _solution
+     */
+    virtual void operator()(EOT & _solution){
+
+      //est qu'on peut initializer
+      //Test if _solution has a Neighbor
+      if(neighborhood.hasNeighbor(_solution)){
+	//init the first neighbor
+	neighborhood.init(_solution, (*current));
+
+	//eval the _solution moved with the neighbor and stock the result in the neighbor
+	eval(_solution, (*current));
+
+	//initialize the best neighbor
+	bestVector.push_back(*current);
+
+	//test all others neighbors
+	while (neighborhood.cont(_solution)) {
+	  //next neighbor
+	  neighborhood.next(_solution, (*current));
+	  
+	  //eval
+	  eval(_solution, (*current));
+		
+	  //if we found a better neighbor, update the best
+	  if (neighborComparator(bestVector[0], (*current))) {
+	    bestVector.clear();
+	    bestVector.push_back(*current);
+	  } else 	 //if the current is equals to previous best solutions then update vector of the best solution
+	    if (neighborComparator.equals((*current), bestVector[0])) 
+	      bestVector.push_back(*current);
+	}
+      } else {
+	//if _solution hasn't neighbor,
+	isAccept=false;
+      }
+    };
+
+    /**
+     * continue if a move is accepted
+     * @param _solution the solution
+     * @return true if an ameliorated neighbor was be found
+     */
+    virtual bool isContinue(EOT & _solution) {
+    	return isAccept ;
+    };
+
+    /**
+     * move the solution with the best neighbor
+     * @param _solution the solution to move
+     */
+    virtual void move(EOT & _solution) {
+      // choose randomly one of the best solutions
+      unsigned int i = rng.random(bestVector.size());
+
+      //move the solution
+      bestVector[i].move(_solution);
+
+      //update its fitness
+      _solution.fitness(bestVector[i].fitness());
+    };
+
+    /**
+     * accept test if an amelirated neighbor was be found
+     * @param _solution the solution
+     * @return true if the best neighbor ameliorate the fitness
+     */
+    virtual bool accept(EOT & _solution) {
+      if(neighborhood.hasNeighbor(_solution)){
+	isAccept = solNeighborComparator(_solution, bestVector[0]) ;
+      }
+      return isAccept;
+    };
+
+private:
+    // comparator betwenn solution and neighbor or between neighbors
+    moNeighborComparator<Neighbor>& neighborComparator;
+    moSolNeighborComparator<Neighbor>& solNeighborComparator;
+
+    // the best solutions in the neighborhood
+    std::vector<Neighbor> bestVector;
+    //Pointer on the current neighbor
+    Neighbor* current;
+
+    // true if the move is accepted
+    bool isAccept ;
+};
+
+
+#endif