Generalized stationary points and an interior-point method for mathematical programs with equilibrium constraints

被引:0
作者
Xinwei Liu
Jie Sun
机构
[1] National University of Singapore and Department of Applied Mathematics,Singapore
[2] National University of Singapore,MIT Alliance
来源
Mathematical Programming | 2004年 / 101卷
关键词
Global convergence; Interior-point methods; Mathematical programming with equilibrium constraints; Stationary point;
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学科分类号
摘要
Generalized stationary points of the mathematical program with equilibrium constraints (MPEC) are studied to better describe the limit points produced by interior point methods for MPEC. A primal-dual interior-point method is then proposed, which solves a sequence of relaxed barrier problems derived from MPEC. Global convergence results are deduced under fairly general conditions other than strict complementarity or the linear independence constraint qualification for MPEC (MPEC-LICQ). It is shown that every limit point of the generated sequence is a strong stationary point of MPEC if the penalty parameter of the merit function is bounded. Otherwise, a point with certain stationarity can be obtained. Preliminary numerical results are reported, which include a case analyzed by Leyffer for which the penalty interior-point algorithm failed to find a stationary point.
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页码:231 / 261
页数:30
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