1. Department of Statistics and O.R., University of Granada, Granada, Spain
2. Department of Quantitative Methods for Economics and Business, University of Granada, Granada, Spain
3. Department of Informatics, De Montfort University, Leicester, UK
4. Department of Computer Information Systems, Middle East University, Amman, Jordan
5. Department of Computer Science and A.I, University of Granada, Granada, Spain
6. Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah, Saudi Arabia