Xujn Chen received her Ph.D degree in operations research from Hong Kong University, China, in 2004. Dr. Chen is currently a research professor at Institute of Applied Mathematics, Academy of Mathematics and Systems Science, Chinese Academy of Sciences. Her research interests include include Polyhedral Combinatorics (with an emphasis on dual integrality), Algorithmic Game Theory (with an emphasis on network games), and Design and Analysis of Algorithms for Discrete Optimization Problems (with an emphasis on approximation algorithms for NPhard problems).