1. Department of Computer Science, Ecole Normale Superieure, Cadi Ayyad University, Marrakech, Morocco
2. LTI Laboratory ENSA, Chouaib Doukkali University, El Jadida, Morocco
3. LAMSAD Laboratory ENSA, Hassan First University, Berrechid, Morocco
4. Higher Polytechnic School, Universidad Europea del Atlántico, Santander, Spain
5. Department of Information and Communication Engineering, Yeungnam University, Gyeongsan, Republic of Korea