Journal
COMPUTERS & CHEMICAL ENGINEERING
Volume 132, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compchemeng.2019.106609
Keywords
Nonconvex bilevel programming; Branch-and-Sandwich algorithm; Optimization software; BASBL solver; MINOTAUR toolkit; BASBLib
Funding
- Leverhulme Trust
- EPSRC [EP/J003840/1]
- Research Council of Lithuania [S-MIP-17-67]
- EPSRC [EP/J014958/1, EP/J003840/1] Funding Source: UKRI
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We describe BASBL, our implementation of the deterministic global optimization algorithm Branch-and-Sandwich for a general class of nonconvex/nonlinear bilevel problems, within the open-source MINOTAUR framework. The solver incorporates the original Branch-and-Sandwich algorithm and modifications proposed in (Paulavicius and Adjiman, J. Glob. Opt., 2019, Submitted). We also introduce BASBLib, an extensive online library of bilevel benchmark problems collected from the literature and designed to enable contributions from the bilevel optimization community. We use the problems in the current release of BASBLib to analyze the performance of BASBL using different algorithmic options and we identify a set of default options that provide good overall performance. Finally, we demonstrate the application of BASBL to a set of flexibility index problems including linear and nonlinear constraints. (C) 2019 Published by Elsevier Ltd.
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