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arXiv 1905.01893math.OC
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或约束最优化问题数值解的一阶方法比较

A comparison of first-order methods for the numerical solution of or-constrained optimization problems

Patrick Mehlitz

摘要:

带或约束的数学规划形成了一类新的具有内在实际意义的析取最优化问题。在本文中,我们提供了一个比较三个不同的一阶方法的数值处理这类问题的启发,从析取编程的经典方法。首先,我们研究了用合适的NCP-函数将或-约束替换为非线性不等式约束。其次,我们将或约束规划转化为具有切换或互补约束的数学规划,这些约束可以借助众所周知的松弛法来处理。第三,一个直接Scholtes型松弛的或约束进行了研究。所有这些方法的数值比较,这是基于三个本质上不同的模型程序或约束优化关闭文件。

英文摘要:

Mathematical programs with or-constraints form a new class of disjunctive optimization problems with inherent practical relevance. In this paper, we provide a comparison of three different first-order methods for the numerical treatment of this problem class which are inspired by classical approaches from disjunctive programming. First, we study the replacement of the or-constraints as nonlinear inequality constraints using suitable NCP-functions. Second, we transfer the or-constrained program into a mathematical program with switching or complementarity constraints which can be treated with the aid of well-known relaxation methods. Third, a direct Scholtes-type relaxation of the or-constraints is investigated. A numerical comparison of all these approaches which is based on three essentially different model programs from or-constrained optimization closes the paper.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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