1. Department of Computer Science & Engineering, Meghnad Saha Institute of Technology, Nazirabad Rd, Uchhepota, Kolkata 700150, West Bengal, India
2. Department of Computer Science, Iowa State University, Atanasoff Hall, 2434 Osborn Dr, Ames, IA 50011, U.S.A.
3. Department of Information Technology, Meghnad Saha Institute of Technology, Nazirabad Rd, Uchhepota, Kolkata 700150, West Bengal, India
4. Department of Computer Science & Engineering, Jadavpur University, 188, Raja S.C. Mallick Rd, Kolkata 700032, West Bengal, India