diff --git a/branches/ParadisEO-GPU/paradiseo-gpu/src/neighborhood/moGPUXChangeNeighbor.h b/branches/ParadisEO-GPU/paradiseo-gpu/src/neighborhood/moGPUXChangeNeighbor.h
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+/*
+ <moGPUXChangeNeighbor.h>
+ Copyright (C) DOLPHIN Project-Team, INRIA Lille - Nord Europe, 2006-2010
+
+ Boufaras Karima, Thé Van Luong
+
+ 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".
+
+ 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 _moGPUXChangeNeighbor_h
+#define _moGPUXChangeNeighbor_h
+
+#include <neighborhood/moIndexNeighbor.h>
+
+/**
+ * A X-Change Neighbor
+ * useful in parallel computing, it allows to associate to a neighbor represented by a single index,a set of indices
+ * to build the neighbor from the solution and the number of positions to change
+ */
+
+template<class EOT, class Fitness = typename EOT::Fitness>
+class moGPUXChangeNeighbor: virtual public moIndexNeighbor<EOT> {
+
+public:
+
+	using moIndexNeighbor<EOT>::key;
+
+	/**
+	 * Default Constructor
+	 */
+
+	moGPUXChangeNeighbor() :
+		moIndexNeighbor<EOT> (),xChange(0) {
+		indices = NULL;
+	}
+
+	/**
+	 * Default destructor
+	 */
+
+	~moGPUXChangeNeighbor() {
+		delete[] (indices);
+	}
+
+	/**
+	 * Constructor
+	 * @param _xChange the number of x-change to do
+	 */
+
+	moGPUXChangeNeighbor(unsigned int _xChange) {
+		xChange = _xChange;
+		indices = new unsigned int[xChange];
+	}
+
+	/**
+	 * Copy Constructor
+	 * @param _n the neighbor to copy
+	 */
+
+	moGPUXChangeNeighbor(const moGPUXChangeNeighbor& _n) :
+		moIndexNeighbor<EOT> (_n) {
+		this->xChange = _n.xChange;
+		this->indices = new unsigned int[xChange];
+		for (unsigned int i = 0; i < xChange; i++)
+			this->indices[i] = _n.indices[i];
+	}
+
+	/**
+	 * Assignment operator
+	 * @param _source the neighbor to assign to this curent neighbor
+	 */
+
+	virtual moGPUXChangeNeighbor<EOT> & operator=(
+			const moGPUXChangeNeighbor<EOT> & _source) {
+		moIndexNeighbor<EOT, Fitness>::operator=(_source);
+		this->xChange = _source.xChange;
+		this->reSizeIndices(xChange);
+		for (unsigned int i = 0; i < xChange; i++)
+			this->indices[i] = _source.indices[i];
+		return *this;
+	}
+
+	/**
+	 * Setter to update the i'th index of x-change
+	 * @param _i the index to update
+	 * @param _val the new value to set to the i'th index of x-change
+	 */
+
+	void setIndice(unsigned int _i, unsigned int _val) {
+			indices[_i] = _val;
+	}
+
+	/**
+	 * Get the i'th index of x-change
+	 */
+
+	unsigned int getIndice(unsigned int _i) {
+		return indices[_i];
+	}
+
+	/**
+	 * Setter to update the set of x-change indexes
+	 * @param _indices the set of new value indexes of the x-change
+	 */
+
+	void setIndices(unsigned int * _indices) {
+		for (unsigned int i = 0; i < xChange; i++) {
+			setIndice(i, _indices[i]);
+		}
+	}
+
+	/**
+	 * Setter to fix the xChange
+	 * @param _xChange the number of swap
+	 */
+
+	void setXChange(unsigned int _xChange) {
+		xChange = _xChange;
+		reSizeIndices(_xChange);
+	}
+
+	/**
+	 * Get the number of swap
+	 */
+
+	unsigned int getXChange() {
+		return xChange;
+	}
+
+	/**
+	 * Resize the indices array of x-change indexes
+	 *@param _xChange the number of x-change
+	 */
+
+	void reSizeIndices(unsigned int _xChange) {
+		delete[] (indices);
+		indices = new unsigned int[_xChange];
+	}
+
+	/**
+	 * Return the class name.
+	 * @return the class name as a std::string
+	 */
+
+	virtual std::string className() const {
+		return "moGPUXChangeNeighbor";
+	}
+
+	/**
+	 * Read object.\
+	 * Calls base class, just in case that one had something to do.
+	 * The read and print methods should be compatible and have the same format.
+	 * In principle, format is "plain": they just print a number
+	 * @param _is a std::istream.
+	 * @throw runtime_std::exception If a valid object can't be read.
+	 */
+
+	virtual void readFrom(std::istream& _is) {
+		std::string fitness_str;
+		int pos = _is.tellg();
+		_is >> fitness_str;
+		if (fitness_str == "INVALID") {
+			throw std::runtime_error("invalid fitness");
+		} else {
+			Fitness repFit;
+			_is.seekg(pos);
+			_is >> repFit;
+			_is >> xChange;
+			_is >> key;
+			for (unsigned int i = 0; i < xChange; i++)
+				_is >> indices[i];
+			fitness(repFit);
+		}
+	}
+
+	/**
+	 * Print the Neighbor
+	 */
+
+	void print() {
+		std::cout << "[";
+		for (unsigned int i = 0; i < xChange; i++)
+			std::cout<< indices[i]<< " ";
+		std::cout << "] -> " << (*this).fitness() << std::endl;
+	}
+
+protected:
+
+	unsigned int * indices;
+	unsigned int xChange;
+
+};
+
+#endif
+