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trunk/paradiseo-mo/src/memory/moIndexedVectorTabuList.h
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trunk/paradiseo-mo/src/memory/moIndexedVectorTabuList.h
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/*
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<moIndexedVectorTabuList.h>
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Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
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Sébastien Verel, Arnaud Liefooghe, Jérémie Humeau
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This software is governed by the CeCILL license under French law and
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abiding by the rules of distribution of free software. You can ue,
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modify and/ or redistribute the software under the terms of the CeCILL
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license as circulated by CEA, CNRS and INRIA at the following URL
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"http://www.cecill.info".
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In this respect, the user's attention is drawn to the risks associated
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with loading, using, modifying and/or developing or reproducing the
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software by the user in light of its specific status of free software,
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that may mean that it is complicated to manipulate, and that also
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therefore means that it is reserved for developers and experienced
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professionals having in-depth computer knowledge. Users are therefore
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encouraged to load and test the software's suitability as regards their
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requirements in conditions enabling the security of their systems and/or
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data to be ensured and, more generally, to use and operate it in the
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same conditions as regards security.
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The fact that you are presently reading this means that you have had
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knowledge of the CeCILL license and that you accept its terms.
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ParadisEO WebSite : http://paradiseo.gforge.inria.fr
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#ifndef _moIndexedVectorTabuList_h
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#define _moIndexedVectorTabuList_h
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#include <memory/moTabuList.h>
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#include <vector>
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#include <iostream>
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/**
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* Tabu List of indexed neighbors save in a vector
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* each neighbor can not used during howlong iterations
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*/
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template<class Neighbor >
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class moIndexedVectorTabuList : public moTabuList<Neighbor>
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{
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public:
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typedef typename Neighbor::EOT EOT;
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/**
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* Constructor
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* @param _maxSize maximum size of the tabu list
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* @param _howlong how many iteration a move is tabu
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*/
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moIndexedVectorTabuList(unsigned int _maxSize, unsigned int _howlong) : maxSize(_maxSize), howlong(_howlong) {
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tabuList.resize(_maxSize);
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}
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/**
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* init the tabuList by clearing the memory
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* @param _sol the current solution
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*/
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virtual void init(EOT & _sol) {
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clearMemory();
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}
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/**
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* add a new neighbor in the tabuList
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* @param _sol unused solution
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* @param _neighbor the current neighbor
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*/
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virtual void add(EOT & _sol, Neighbor & _neighbor) {
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if (_neighbor.index() < maxSize)
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tabuList[_neighbor.index()] = howlong;
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}
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/**
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* update the tabulist by decreasing the number of tabu iteration
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* @param _sol unused solution
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* @param _neighbor unused neighbor
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*/
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virtual void update(EOT & _sol, Neighbor & _neighbor) {
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for (unsigned int i = 0; i < maxSize; i++)
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if (tabuList[i] > 0)
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tabuList[i]--;
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}
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/**
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* check if the move is tabu
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* @param _sol unused solution
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* @param _neighbor the current neighbor
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* @return true if tabuList contains _sol
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*/
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virtual bool check(EOT & _sol, Neighbor & _neighbor) {
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return (tabuList[_neighbor.index()] > 0);
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}
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/**
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* clearMemory: remove all solution of the tabuList
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*/
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virtual void clearMemory() {
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for (unsigned int i = 0; i < maxSize; i++)
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tabuList[i] = 0;
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}
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void print(){
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std::cout << "Tabulist:" << std::endl;
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for(int i=0; i<tabuList.size(); i++)
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std::cout << i << ": " << tabuList[i] << std::endl;
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}
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private:
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//tabu list
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std::vector< unsigned int > tabuList;
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//maximum size of the tabu list
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unsigned int maxSize;
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//how many iteration a move is tabu
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unsigned int howlong;
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};
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#endif
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@ -0,0 +1,97 @@
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/*
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<moIndexedSwapNeighbor.h>
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Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
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Sébastien Verel, Arnaud Liefooghe, Jérémie Humeau
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This software is governed by the CeCILL license under French law and
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|
abiding by the rules of distribution of free software. You can ue,
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|
modify and/ or redistribute the software under the terms of the CeCILL
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|
license as circulated by CEA, CNRS and INRIA at the following URL
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|
"http://www.cecill.info".
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|
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|
In this respect, the user's attention is drawn to the risks associated
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|
with loading, using, modifying and/or developing or reproducing the
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software by the user in light of its specific status of free software,
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|
that may mean that it is complicated to manipulate, and that also
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|
therefore means that it is reserved for developers and experienced
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professionals having in-depth computer knowledge. Users are therefore
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|
encouraged to load and test the software's suitability as regards their
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|
requirements in conditions enabling the security of their systems and/or
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|
data to be ensured and, more generally, to use and operate it in the
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|
same conditions as regards security.
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The fact that you are presently reading this means that you have had
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knowledge of the CeCILL license and that you accept its terms.
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ParadisEO WebSite : http://paradiseo.gforge.inria.fr
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#ifndef _moIndexedSwapNeighbor_h
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#define _moIndexedSwapNeighbor_h
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#include <neighborhood/moBackableNeighbor.h>
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#include <neighborhood/moIndexNeighbor.h>
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/**
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* Indexed Swap Neighbor: the position of the swap are computed according to the index
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*/
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template <class EOT, class Fitness=typename EOT::Fitness>
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class moIndexedSwapNeighbor: public moBackableNeighbor<EOT, Fitness>, public moIndexNeighbor<EOT>
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{
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public:
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// using moIndexNeighbor<EOT>::EOT;
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using moBackableNeighbor<EOT>::fitness;
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using moIndexNeighbor<EOT>::key;
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/**
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* Apply the swap
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* @param _solution the solution to move
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*/
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virtual void move(EOT& _solution) {
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unsigned int tmp;
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unsigned i, j;
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this->getIndices(_solution.size(), i, j);
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tmp = _solution[i];
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_solution[i] = _solution[j];
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_solution[j] = tmp;
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_solution.invalidate();
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}
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/**
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* apply the swap to restore the solution (use by moFullEvalByModif)
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* @param _solution the solution to move back
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*/
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virtual void moveBack(EOT& _solution) {
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unsigned int tmp;
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unsigned i, j;
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this->getIndices(_solution.size(), i, j);
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tmp = _solution[i];
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_solution[i] = _solution[j];
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_solution[j] = tmp;
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_solution.invalidate();
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}
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/**
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* Get the two indexes of the swap
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* @param N size of the permutation
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* @param _first first index
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* @param _second second index
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*/
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void getIndices(unsigned N, unsigned int & _first, unsigned int & _second) {
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unsigned int n = (unsigned int) ( (1 + sqrt(1 + 8 * key)) / 2);
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_first = key - (n - 1) * n / 2;
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_second = N - 1 - (n - 1 - _first);
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}
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};
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#endif
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