Education Qualifications

PhD, Operations Research, Massachusetts Institute of Technology, Cambridge, MA., 1996 Bachelor of Science (Hon), Mathematics, National University of Singapore, 1990

Academic and Professional Experience

Professor, National University of Singapore, 1 July 2007 - Present Professor of Decision Sciences, Sungkyunkwan Graduate School of Business, Sungkyunkwan University, South Korea, 2004 - 2005 Visiting Scholar, Hong Kong University of Science and Technology, 2004 - 2004 Johnson and Johnson Associate Professor, Supply Chain Management, National University of Singapore, 2001 - 2002 Eschbach Scholar, Northwestern University, 2001 - 2001 Associate Professor, National University of Singapore, 2000 - 30 June 2007 Fellow, Singapore MIT Alliance Program, 1999 - 2004 Visiting Scientist, Massachusetts Institute of Technology, 1998 - 1998 Assistant professor, National University of Singapore, 1998 - 2000 Lecturer, National University of Singapore, 1996 - 1998 Senior Tutor, National University of Singapore, 1991 - 1996 Defence Engineer, Defence Science Organization, Singapore., 1990 - 1991

Selected Publications

Journal Articles

Design for Process Flexibility: Efficiency of the Long Chains and Sparse Structure, with Mabel Chou, GBA Chua, and H Zheng, Operations Research, To Appear From CVar to Uncertainty Set: Implications in Joint Chance Constrained Problems, with WQ Chen, M. Sim, J. Sun, Operations Research, To Appear Persistency Model and its applications in Choice Modeling, with N. Karthik, M. Song, Management Science, 2009 Many-To-One Stable Matching: Fairness and Geometry, with Jay Sethuraman and LW Qian, Mathematics of Operations Research, 2006 Vol 31, No. 3,pp. 581-596. Persistency in Discrete Optimization under Data Uncertainty, with N. Karthik and D Bertsimas, Mathematical Programming, 2006 108 (2-3): 251-274 Anonymous Monotonic Social Welfare Functions, with Jay Sethuraman and R.Vohra, Journal of Economic Theory, 2006 Volume 128, Issue 1, Pg 232-254. Staggering Periodic Replenishment in Multi-Vendor JIT Environments, with SH Hum and M Sharafali, Operations Research, Jul 2005 53 (4), 698-710 Stochastic Transportation-Inventory Network Design Problem, with J. Shu and Max Shen, Operations Research, Jan 2005 Volume 53, No. 1, Warehouse-retailer Network Design Problem, with J. Shu, Operations Research, May 2004 Vol. 52, No. 3, pp396-408 Probabilistic Combinatorial Optimization: Moments, Semidefinite Programming and Asymptotic Bounds, with D. Bertsimas and N Karthik, SIAM Journal of Optimization, 2004 Volume 15, No. 1, pp 185-209 Integer Programming and Arrovian Social Welfare Function, with J. Sethuraman and R. Vohra, Mathematics of Operations Research, 2003 Vol 28, Number 2, Pg 309-326 Inventory Cost Effect of Consolidating Several One-warehouse Multi-retailer Systems, with WS Lim and J Ou, Operations Research, 2003 Vol 51, No. 4, Pg 668-672 Effectiveness of Zero Inventory Policies for a one-warehouse multi-retailer problem with Piecewise Linear Cost Structures, with Chan A.L., Muriel A., Zhen ZJ, Simchi-Levi D., Management Science, 2002 48, Number 11, pg1446-1460 Managing Risk in a Four Digit Number Game, with SM Leong, SIAM Review, 2002 Vol 44, No. 4, 601-615 Gale-Shapley Stable Marriage Problem Revisited: Strategic Issues and Applications, with J. Sehuraman and W.P. Tan, Management Science, 2001 Vol 47, No. 9, Pg1252-1267 A Constant Factor Approximation Algorithm for Packet Routing and Balancing Local Versus Global Constraints, with Srinivasan, A., SIAM Journal on Computing, 2001 Vol 30, No. 6, 2051-2068 Multistage Lot Sizing Via Randomized Rounding, with D Bertsimas, Operations Research, 2001 Vol 49(4), 599-608, July - August Geometry of Fractional Stable Matching and Its Application, with Jay Sethumuraman, Mathematics of Operations Research, 1998 Vol 23, No. 4, 874-891 From Valid Inequalities to Heuristics: A Unified View of Primal-dual Approximation Algorithms in Covering Problems, with Bertsimas, D, Operations Research, 1998 Vol 46, 503-513

Membership And Professional Activities

Associate Editor: Management Science (2004-Present) Associate Editor: Operations Research (2007-Present) Associate Editor, IIE Transactions (2009 - present) Associate Editor: Naval Research Logistics Quarterly, (2003-2007) Senior Editor, Journal of Flexible Services and Manufacturing (2007 - present) Associate Editor: IEEE T-ASE (2003 - 2006) Associate Editor: Networks (2001-2007)

Consultation and Executive Experience

Hewlett Packard (Asia Pacific) Port of Singapore Authority Unilever (Asia Pacific)

Research Interests

Auction Combinatorial Optimization Social Choice Supply Chain Management

Courses

Purchasing and Materials Management Operations Management Supply Chain Management Service Operations Management

PERSONAL HOMEPAGE