1. Department of Computer Science and Engineering, BRAC University, Dhaka, Bangladesh
2. Research Chair of Pervasive and Mobile Computing, Department of Information Systems, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi Arabia
3. College of Arts and Sciences, University of Maine at Presque Isle, Presque Isle, ME, USA
4. Department of Informatics, Modeling, Electronics, and Systems, University of Calabria, Rende, Italy