1. Department Computer Science, Faculty Computer Science and Information Technology, Universiti Putra Malaysia, 43400 Serdang, Selangor, Malaysia. E-mails: shahi.soozaei@gmail.com, nasir@upm.edu.my, norwati@upm.edu.my, thinagaran@upm.edu.my
2. School of Engineering and Computing Sciences, New York Institute of Technology, Nanjing Campus, China. E-mail: rparizi@nyit.edu