1. University of Toronto Mississauga, Mississauga, ON, Canada
2. Georgia Institute of Technology, Atlanta, GA, USA
3. IBM Research, Cambridge, MA, USA
4. Technische Universität Wien, Vienna, Austria
5. University of Colorado Boulder, Boulder, CO, USA
6. Carnegie Mellon University, Pittsburgh, PA, USA
7. University of Maryland, College Park, MD, USA
8. University of Melbourne, Melbourne, Australia