EPFL Lausanne, Switzerland;Università Roma Tre, Italy;INRIA Rocquencourt, Le Chesnay Cedex, France;Université Claude Bernard Lyon 1, Villeurbanne, France;State University of New York, Stony Brook;University of Toronto, Ontario, Canada;Politecnico di Milano DEI, Italy;University of Trento, Italy;University of Alicante, Spain;University of Trento, Italy