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Title: Mixed 0-1 linear programs under objective uncertainty: A completely positive representation
Authors: Natarajan, K.
Teo, C.P. 
Zheng, Z.
Keywords: Completely positive program
Mixed 0-1 linear program
Issue Date: 2011
Citation: Natarajan, K., Teo, C.P., Zheng, Z. (2011). Mixed 0-1 linear programs under objective uncertainty: A completely positive representation. Operations Research 59 (3) : 713-728. ScholarBank@NUS Repository.
Abstract: In this paper, we analyze mixed 0-1 linear programs under objective uncertainty. The mean vector and the second-moment matrix of the nonnegative objective coefficients are assumed to be known, but the exact form of the distribution is unknown. Our main result shows that computing a tight upper bound on the expected value of a mixed 0-1 linear program in maximization form with random objective is a completely positive program. This naturally leads to semidefinite programming relaxations that are solvable in polynomial time but provide weaker bounds. The result can be extended to deal with uncertainty in the moments and more complicated objective functions. Examples from order statistics and project networks highlight the applications of the model. Our belief is that the model will open an interesting direction for future research in discrete and linear optimization under uncertainty. © 2011 INFORMS.
Source Title: Operations Research
ISSN: 0030364X
DOI: 10.1287/opre.1110.0918
Appears in Collections:Staff Publications

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