arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2107.00601math.OC
收藏

混合整数非光滑约束optimization的无导数方法

Derivative-free methods for mixed-integer nonsmooth constrained optimization

Tommaso Giovannelli, Giampaolo Liuzzi, Stefano Lucidi, Francesco Rinaldi

摘要:

在本文中,我们考虑混合整数非光滑约束最优化问题,其目标/约束函数仅作为黑盒零阶预言机的输出(即,不提供衍生信息的Oracle),并且我们提出了一种新的基于无衍生的线搜索的算法框架来适当地处理这些问题。我们首先描述了一个计划,结合了密集的方向序列(处理的非光滑的目标函数)与原始方向(处理离散变量)的约束问题。然后,我们嵌入一个精确的惩罚方法,该计划适当地管理非线性(可能是非光滑的)约束。我们分析了所提出的算法对稳定点的整体收敛特性,我们报告了一组混合整数测试问题的大量数值经验的结果。

英文摘要:

In this paper, we consider mixed-integer nonsmooth constrained optimization problems whose objective/constraint functions are available only as the output of a black-box zeroth-order oracle (i.e., an oracle that does not provide derivative information) and we propose a new derivative-free linesearch-based algorithmic framework to suitably handle those problems. We first describe a scheme for bound constrained problems that combines a dense sequence of directions (to handle the nonsmoothness of the objective function) with primitive directions (to handle discrete variables). Then, we embed an exact penalty approach in the scheme to suitably manage nonlinear (possibly nonsmooth) constraints. We analyze the global convergence properties of the proposed algorithms toward stationary points and we report the results of an extensive numerical experience on a set of mixed-integer test problems.

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。

↑