Journal
APPLIED MATHEMATICS AND COMPUTATION
Volume 181, Issue 1, Pages 351-355Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.amc.2006.01.043
Keywords
optimization; linear bilevel programming
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An alternative definition of the linear bilevel programming problem BLP has recently been proposed by Lu, Shi, and Zhang. This note shows that the proposed definition is a restriction of BLP. Indeed, the new definition is equivalent to transferring the first-level constraints involving second-level variables into the second level, resulting in a special case of BLP in which there are no first-level constraint involving second-level variables. Thus, contrary to what is stated by the authors who suggested the new definition, this does not allow to solve a wider class of problems, but rather relaxes the feasible region, allowing for infeasible points to be considered as feasible. (c) 2006 Elsevier Inc. All rights reserved.
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