Branch-and-Sandwich: a deterministic global optimization algorithm for optimistic bilevel programming problems. Part I: Theoretical developmentReport as inadecuate




Branch-and-Sandwich: a deterministic global optimization algorithm for optimistic bilevel programming problems. Part I: Theoretical development - Download this document for free, or read online. Document in PDF available to download.

Journal of Global Optimization

, Volume 60, Issue 3, pp 425–458

First Online: 10 January 2014Received: 16 March 2012Accepted: 15 November 2013

Abstract

We present a global optimization algorithm, Branch-and-Sandwich, for optimistic bilevel programming problems that satisfy a regularity condition in the inner problem. The functions involved are assumed to be nonconvex and twice continuously differentiable. The proposed approach can be interpreted as the exploration of two solution spaces corresponding to the inner and the outer problems using a single branch-and-bound tree. A novel branching scheme is developed such that classical branch-and-bound is applied to both spaces without violating the hierarchy in the decisions and the requirement for global optimality in the inner problem. To achieve this, the well-known features of branch-and-bound algorithms are customized appropriately. For instance, two pairs of lower and upper bounds are computed: one for the outer optimal objective value and the other for the inner value function. The proposed bounding problems do not grow in size during the algorithm and are obtained from the corresponding problems at the parent node.

KeywordsBilevel programming Nonconvex inner problem Branch and bound  Download fulltext PDF



Author: Polyxeni-Margarita Kleniati - Claire S. Adjiman

Source: https://link.springer.com/







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