Papers and Conference Presentations
Journal Publications:
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Kong, N., A.J. Schaefer, and B.
Hunsaker, “Two-Stage Integer Programs with Stochastic Right-Hand Sides:
A Superadditive Dual Approach,” 2006. Mathematical Programming.
Vol. 108, pp. 275-296. (pdf)
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Kong, N.
and A.J. Schaefer, “A Factor ½ Approximation Algorithm for a Class of
Two-Stage Stochastic Mixed-Integer Programs,” 2006. European
Journal of Operational Research. Vol.
172, pp. 740-746. (pdf)
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Stahl, J.E., N. Kong, S.M.
Shechter, A.J. Schaefer, and M.S. Roberts, “A Methodological Framework
for Optimally Re-Organizing Liver Transplant Regions,” 2005.
Medical Decision Making. Vol. 25, No.
3, pp. 35-46. (pdf)
Working Papers:
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Kong, N.,
A.J. Schaefer, and S. Ahmed, “Totally Unimodular Stochastic Programs.”
Submitted to
Mathematical Programming.
2006. Available Online at Optimization Online Digest – May 2006. (pdf)
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Sandikci,
B., N. Kong, and A.J. Schaefer, “A Hierarchy of Bounds for
Two-Stage Stochastic Mixed-Integer Programs,” 2006. To be submitted to
INFORMS Journal on
Computing.
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Bayrak, H., M. D.
Bailey, and N. Kong, “Static and Dynamic Resource Allocation in
Competitive Markov Decision Processes,” 2006. To be submitted to
Operations Research.
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Kong, N.,
A.J. Schaefer, and B. Hunsaker, “A Polyhedral Study for the Pricing
Problem in Optimal Region Design,” 2006. To be submitted to
Discrete Optimization.
Conference Proceedings:
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Kong. N.,
A.J. Schaefer, B. Hunsaker, and M. Roberts, “Computational Improvement
of Integer Programming Models for Determining the Optimal Configuration
of Regions in the U.S. Organ Transplantation and Allocation Network,”
2005. Abstract. In
Proceedings of the 27th Society for Medical Decision Making
Annual Meeting.
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Kong, N.,
A.J. Schaefer, B. Hunsaker and M.S. Roberts, “Optimizing Regions for
Organ Transplants,” 2004. Extended Abstract. In
Proceedings of the 2004 IIE
Research Conference.
(pdf)
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Kong, N., S.M. Shechter, A.J.
Schaefer, and J.E. Stahl, “Organ Transplantation Regions: The Need for
Optimization,” 2002. Extended Abstract. In Proceedings of the2002
IIE Research Conference. (pdf)
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Stahl, J.E., N. Kong, Z. Wang,
A.J. Schaefer, and G.S. Gazelle, “Organ Transplant Regions – What Is
Their Optimal Size and Distribution? A Framework for Analysis,” 2001.
Abstract. In Proceedings of the 23rd Society for
Medical Decision Making Annual Meeting,
also in Medical Decision Making,
vol. 21, No. 6, p. 524.
Selected
Conference Talks (Given by myself or a coauthor):
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“Optimizing the Efficiency of the
United States Organ Allocation System through Region Reorganization,”
INFORMS 2006 Annual Meeting, Pittsburgh, Pennsylvania, November 5-8,
2006. (Presented in the session “2006 Dantzig Dissertation Finalists”)
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“Maximizing the
Efficiency of the U.S. Liver Allocation System through Region
Selection,” INFORMS 2006 Annual Meeting, Pittsburgh, Pennsylvania,
November 5-8, 2006. (Paper submitted for the 2006 Pierskalla Award)
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“A Hierarchy of Bounds for Two-Stage Stochastic
Mixed-Integer Programs,” INFORMS 2006 Annual Meeting, Pittsburgh,
Pennsylvania, November 5-8, 2006.
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“Static and Dynamic Resource Allocation
for Perimeter Security,” INFORMS 2006 Annual Meeting, Pittsburgh,
Pennsylvania, November 5-8, 2006.
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“Simulation-based Optimization Approach
for Maximizing Liver Allocation Efficiency,” INFORMS 2006 Annual
Meeting, Pittsburgh, Pennsylvania, November 5-8, 2006.
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“Total
Unimodular Stochastic Programs,” 19th International Symposium
on Mathematical Programming, Rio de Janeiro, Brazil, July 30 – August 4,
2006. (pdf)
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“Redesigning the Liver Allocation
Hierarchy,” 19th International Symposium on Mathematical
Programming, Rio de Janeiro, Brazil, July 30 – August 4, 2006. (pdf)
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“Simulation-based Optimization Approach for Organ Transplantation Region
Design.” IERC 2006, Orlando, Florida, May 15 – 19, 2006. (pdf)
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“Polyhedral Study of the Optimal Region
Design Problem for Organ Allocation and Transplantation,” INFORMS
Optimization Society Conference on Optimization and Health Care 2006,
San Antonio, Texas, February, 3-5, 2006. (pdf)
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“Computational Improvement of Integer
Programming Models for Determining the Optimal Configuration of Regions
in the U.S. Organ Transplantation and Allocation Network,” Society for
Medical Decision Making 2005 Annual Meeting, San Francisco, California,
October 21 – 24, 2005. (pdf)