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arXiv 1808.01022math.OCmath.CO
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用Douglas-Rachford算法求解图着色问题的一种改进形式

An enhanced formulation for solving graph coloring problems with the Douglas-Rachford algorithm

F. J. Aragón Artacho, R. Campoy, V. Elser

摘要:

研究了图的点着色问题的Douglas-Rachford算法的性质。给定一个图和一些颜色,目标是找到顶点的着色,使得所有相邻的顶点对都有不同的颜色。尽管这个问题的组合性质,道格拉斯-Rachford算法最近被证明是一个成功的启发式解决各种各样的图形着色的情况下,当这个问题被铸造成一个可行性问题的二进制指标变量。在这项工作中,我们考虑一个不同的配方,基于半定规划。道格拉斯-Rachford算法的性能大大改善,这种新的方法,通过各种数值实验证明。

英文摘要:

We study the behavior of the Douglas-Rachford algorithm on the graph vertex-coloring problem. Given a graph and a number of colors, the goal is to find a coloring of the vertices so that all adjacent vertex pairs have different colors. In spite of the combinatorial nature of this problem, the Douglas-Rachford algorithm was recently shown to be a successful heuristic for solving a wide variety of graph coloring instances, when the problem was cast as a feasibility problem on binary indicator variables. In this work we consider a different formulation, based on semidefinite programming. The much improved performance of the Douglas-Rachford algorithm, with this new approach, is demonstrated through various numerical experiments.

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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