Migration from SVN

mo/src/eval/moDoubleIncrEvaluation.h

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+/*
+  <moDoubleIncrEvaluation.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 moDoubleIncrEvaluation_H
+#define moDoubleIncrEvaluation_H
+
+#include <eval/moNeighborhoodEvaluation.h>
+#include <continuator/moUpdater.h>
+
+/**
+ * Base class for the double incremental evaluation of the neighborhood
+ *
+ * The sizes of the neighborhoods are equal
+ */
+template<class Neighbor>
+class moDoubleIncrEvaluation : public moNeighborhoodEvaluation<Neighbor>, public moUpdater
+{
+public:
+  typedef typename Neighbor::EOT EOT;
+  typedef typename EOT::Fitness Fitness;
+
+  /**
+   * Constructor 
+   *
+   * @param _neighborhoodSize the size of the neighborhood
+   */
+  moDoubleIncrEvaluation(unsigned int _neighborhoodSize) : moNeighborhoodEvaluation<Neighbor>(), moUpdater(), neighborhoodSize(_neighborhoodSize), firstEval(true) { 
+    deltaFitness = new Fitness[neighborhoodSize];
+  }
+  
+  /**
+   * Destructor
+   */
+  ~moDoubleIncrEvaluation() {
+    if (deltaFitness != NULL)
+      delete [] deltaFitness;
+  }
+
+  /**
+   * Initialisation of the evaluation process
+   * The first evaluation will be a simple incremental evaluation
+   *
+   */
+  virtual void init() {
+    firstEval = true;
+  }
+
+  virtual void operator()() {
+  }
+
+  /**
+   *  Evaluation of the neighborhood
+   *  Here nothing to do 
+   *
+   * @param _solution the current solution 
+   */
+  virtual void operator()(EOT & _solution) {
+  }
+
+  /** the delta of fitness for each neighbors 
+   *  The fitness of the neighbor i is given by : fitness(solution) + deltaFitness[i]
+   */
+  Fitness * deltaFitness;
+
+protected:
+  /** the neighborhood size */
+  unsigned int neighborhoodSize;
+
+  /** flag : true when it is the first evaluation */
+  bool firstEval;
+};
+
+#endif