Constraint Qualifications and KKT Conditions for Bilevel Programming Problems

  • Authors:
  • Jane J. Ye

  • Affiliations:
  • Department of Mathematics and Statistics, University of Victoria, Victoria, B.C., Canada V8W 3P4

  • Venue:
  • Mathematics of Operations Research
  • Year:
  • 2006

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Abstract

In this paper we consider the bilevel programming problem (BLPP), which is a sequence of two optimization problems where the constraint region of the upper-level problem is determined implicitly by the solution set to the lower-level problem. We extend well-known constraint qualifications for nonlinear programming problems such as the Abadie constraint qualification, the Kuhn-Tucker constraint qualification, the Zangwill constraint qualification, the Arrow-Hurwicz-Uzawa constraint qualification, and the weak reverse convex constraint qualification to BLPPs and derive a Karash-Kuhn-Tucker (KKT)-type necessary optimality condition under these constraint qualifications without assuming the lower-level problem satisfying the Mangasarian Fromovitz constraint qualification. Relationships among various constraint qualifications are also given.