Abstract
In this paper, we will study optimality conditions of semi-infinite programs and generalized semi-infinite programs by employing lower order exact penalty functions and the condition that the generalized second-order directional derivative of the constraint function at the candidate point along any feasible direction for the linearized constraint set is non-positive. We consider three types of penalty functions for semi-infinite program and investigate the relationship among the exactness of these penalty functions. We employ lower order integral exact penalty functions and the second-order generalized derivative of the constraint function to establish optimality conditions for semi-infinite programs. We adopt the exact penalty function technique in terms of a classical augmented Lagrangian function for the lower-level problems of generalized semi-infinite programs to transform them into standard semi-infinite programs and then apply our results for semi-infinite programs to derive the optimality condition for generalized semi-infinite programs. We will give various examples to illustrate our results and assumptions.
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Acknowledgments
The authors are grateful to the referees for providing very detailed, constructive and helpful comments and suggestions, from which the presentation of the paper has been significantly improved. The research of the first author was supported by the Research Grants Council of Hong Kong with grant numbers: PolyU 5334/08E and PolyU 5292/13E, and National Science Foundation of China (11431004). The research of the third author was partly supported by National Natural Science Foundation of China (11101248, 11271233) and Shandong Province Natural Science Foundation (ZR2012AM016).
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This paper is dedicated to Professor Elijah (Lucien) Polak for his 85th birthday.
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Yang, X., Chen, Z. & Zhou, J. Optimality Conditions for Semi-Infinite and Generalized Semi-Infinite Programs Via Lower Order Exact Penalty Functions. J Optim Theory Appl 169, 984–1012 (2016). https://doi.org/10.1007/s10957-016-0914-1
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DOI: https://doi.org/10.1007/s10957-016-0914-1
Keywords
- Semi-infinite programming
- Generalized semi-infinite program
- Optimality conditions
- Lower-order exact penalization
- Generalized second-order derivative