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*************************** Special Date ******************************

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                                                         Seminar
             Department of Systems Engineering and Engineering Management
The Chinese University of Hong Kong

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Title	:	Cost Allocation for Joint Replenishment Models
Speaker	:	Dr. Jiawei Zhang
		Stern School of Business
		New York University
Date	:	July 26th, 2007 (Thursday)
Time	:	4:30 p.m. - 5:30 p.m.
Venue	:	Room 513
		William M.W. Mong Engineering Building
		(Engineering Building Complex Phase 2)
		CUHK

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Abstract:
　

We consider the one-warehouse multiple retailer model with a submodular joint setup cost function. Although the optimal policy for this problem is still unknown, a class of easy-to-implement power-of-two policies are 98% effective. This paper focuses on how the cost, under an optimal power-of-two policy, should be allocated to the retailers. This question generates an interesting class of cooperative games. We prove that such cooperative games have non-empty cores. The key to our results is a strong duality theorem for the one-warehouse multiple retailer problem under power-of-two policies.

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Biography:
　

Jiawei Zhang is an Assistant Professor of Operations Management at the Stern School of Business, New York University. He received a B.S. degree in Applied Mathematics and an M.S. degree in Operations Research from Tsinghua University, and a Ph.D. in Operations Research from Stanford University. His research interests include Cost Allocation in Supply Chain Management, Deterministic and Stochastic Optimization, and Approximation Algorithms. He has published in journals that include Mathematical Programming, Mathematics of Operations Research, Operations Research, Psychometrika, SIAM Journal on Computing, etc. He was a recipient of the INFORMS Optimization Prize for Young Researchers in 2004.

************************* ALL ARE WELCOME ************************

Host	:	Prof. Shuzhong Zhang
Tel	:	(852) 2609-8240
Email	:	zhang@se.cuhk.edu.hk
Enquiries	:	Lu Qin or Jeffrey Xu Yu
	:	Department of Systems Engineering and Engineering Management
		CUHK
Website	:	http://www.se.cuhk.edu.hk/~seg5810
Email	:	seg5810@se.cuhk.edu.hk

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