Institution: | (1) Department of Computer Science & Engineering, University of Washington, Seattle, WA 98195-2350, USA, US;(2) Department of Applied Biological Sciences, Science University of Tokyo, Noda 278, Japan, JP;(3) Centre de recherches mathématiques, Université de Montréal, CP 6128 Succursale Centre-ville, Montréal, Québec H3C 3J7, Canada, CA |