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The "Best" Algorithm for Solving Stochastic Mixed Integer Programs / Proceedings of the 2006 Winter Simulation Conference

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Author
Sanchez, Susan M.
Wood, R. Kevin
Date
2006
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Abstract
We present a new algorithm for solving two-stage stochastic mixed-integer programs (SMIPs) having discrete first-stage variables, and continuous or discrete second-stage variables. For a minimizing SMIP, the BEST algorithm (1) computes an upper Bound on the optimal objective value (typically a probabilistic bound), and identifies a deterministic lowerbounding function, (2) uses the bounds to Enumerate a set of first-stage solutions that contains an optimal solution with pre-specified confidence, (3) for each first-stage solution, Simulates second-stage operations by repeatedly sampling random parameters and solving the resulting model instances, and (4) applies statistical Tests (e.g., “screening procedures”) to the simulated outcomes to identify a nearoptimal first-stage solution with pre-specified confidence. We demonstrate the algorithm’s performance on a stochastic facility-location problem.
Description
SUSAN M. SANCHEZ is Professor of Operations Research at the Naval Postgraduate School, where she holds a joint appointment in the Graduate School of Business and Public Policy. Her research interests include experimental design for simulation studies, data-intensive statistics, and robust selection. She has a Ph.D. in Operations Research from Cornell University. She is currently the Simulation Area Editor for the INFORMS Journal on Computing and the ASA representative to the WSC Board of Directors. Her e-mail and web addresses are <ssanchez@nps.edu> and <http://www.nps.navy.mil/orfacpag/ resumePages/sanchs.htm>, respectively.
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defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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http://hdl.handle.net/10945/35256
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