1. Boursier FRIA du FNRS, ULB, Brussels, Belgium, and School of Computer Science, Carleton University, Ottawa, Canada
2. Department of Computer Science, KAIST, Daejeon, Korea
3. School of Computer Science, Carleton University, Ottawa, Canada
4. GAIA, POSTECH, Pohang, Korea
5. IIPL and SCS, Fudan University, Shanghai, P. R. China, and CS, GUtech, Muscat, Oman
6. Department of Computer Science, University of Tokyo, Tokyo, Japan
7. National Institute of Informatics, Tokyo, Japan, and JST ERATO, Kawarabayashi Project, Japan
8. Department of Communication Engineering and Informatics, University of Electro-Communications, Tokyo, Japan
9. EPFL, Lausanne, Switzerland and Rényi Institute, Budapest, Hungary
10. Software School, Shanghai Key Laboratory of Intelligent Information Processing, Fudan University, Shanghai, P. R. China
11. Graduate School of Information Sciences, Tohoku University, Sendai, Japan