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arXiv 2107.03570math.OCcs.DS
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用快速在线学习算法求解线性规划

Solving Linear Programs with Fast Online Learning Algorithms

Wenzhi Gao, Dongdong Ge, Chunlin Sun, Yinyu Ye

AI总结:

本文提出快速一阶方法近似求解线性规划,通过适配在线算法和变量复制技术降低最优性差距,并集成到筛选列生成方案中,可作为直接求解器或初始化子程序。

摘要:

本文提出了用于近似求解线性规划(LPs)的快速一阶方法。我们将在线线性规划算法适配到离线LP问题,并获得了避免任何矩阵乘法的算法。我们还引入了一种变量复制技术,将每个变量复制$K$次,并将最优性差距和约束违反度降低$\sqrt{K}$倍。此外,我们展示了在线算法如何有效地集成到筛选(sifting)中,这是一种用于大规模LP的列生成方案。数值实验表明,我们的方法既可以作为近似直接求解器,也可以作为精确LP求解的初始化子程序。

英文摘要:

This paper presents fast first-order methods for solving linear programs (LPs) approximately. We adapt online linear programming algorithms to offline LPs and obtain algorithms that avoid any matrix multiplication. We also introduce a variable-duplication technique that copies each variable $K$ times and reduces the optimality gap and constraint violation by a factor of $\sqrt{K}$. Furthermore, we show how online algorithms can be effectively integrated into sifting, a column generation scheme for large-scale LPs. Numerical experiments demonstrate that our methods can serve as either an approximate direct solver, or an initialization subroutine for exact LP solving.

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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