[1] Coll Engn & Technol, Dept Comp Sci & Engn, Bhubaneswar 751003, India
[2] Ravenshaw Univ, Dept Comp Sci, Cuttack 753003, India
[3] Univ Delhi, Dept Comp Sci, Ramanujan Coll, New Delhi 110019, India
[4] Edge Hill Univ, Dept Comp Sci, Ormskirk, England
[5] Univ Bedfordshire, Inst Res Applicable Comp, Luton, Beds, England
[6] Tech Univ Denmark, Dept Appl Math & Comp Sci, DK-2800 Lyngby, Denmark
[7] Univ Padua, Dept Informat Engn, Padua, Italy