1. Department of Mathematics, Faculty of Science, Shahid Rajaee Teacher Training University, Tehran 16785-163, Iran
2. Department of Computer Science, Swiss Distance University of Applied Sciences, 3900 Brig, Switzerland
3. Department of Biomedical Computer Science and Mechatronics, UMIT, A-6060 Hall in Tyrol, Austria
4. College of Artficial Intelligence, Nankai University, Tianjin 300071, China
5. Predictive Society and Data Analytic Lab, Faculty of Information Technology and Communication Sciences, Tampere University, 33100 Tampere, Finland