Affiliation: | (1) School of Computer Science, Carleton University, Otawa, Ontario, K1S 5B6, Canada;(2) Universitat Politècnica de Catalunya, Barcelona, Spain;(3) Department of Computing and Information Science, Queen's University, Kingston, Ontario, K7L 3N6, Canada;(4) Faculty of Computer Sciences, Rutgers University, Camden, NJ, 08102, U.S.A;(5) School of Computing Science, Simon Fraser University, Burnaby, V5A 1S6, Canada;(6) School of Computer Science, McGill University, Montreal, Quebec, H3A 2A7, Canada |