arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1202.0435math.OCmath.MG
收藏

利用核点挖掘凸凸优化的对称性

Exploiting Symmetry in Integer Convex Optimization using Core Points

Katrin Herr, Thomas Rehn, Achill Schürmann

摘要:

本文研究了在线性对称群下具有不变积分约束的凸规划问题。为了分解这些问题,我们引入了核心点的新概念,即,轨道多面体是无格的整数点。对于对称整数线性规划,我们描述了两个算法的基础上,这种分解。使用的核心点的直积的对称群的表征,我们表明,原型实现可以与最先进的商业求解器竞争,并解决了一个开放的MIPLIB问题。

英文摘要:

We consider convex programming problems with integrality constraints that are invariant under a linear symmetry group. To decompose such problems we introduce the new concept of core points, i.e., integral points whose orbit polytopes are lattice-free. For symmetric integer linear programs we describe two algorithms based on this decomposition. Using a characterization of core points for direct products of symmetric groups, we show that prototype implementations can compete with state-of-the-art commercial solvers, and solve an open MIPLIB problem.

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。

↑