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arXiv 1302.3404cs.DS
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极小极大边q-染色问题

The min-max edge q-coloring problem

Tommi Larjomaa, Alexandru Popa

摘要:

在本文中,我们介绍和研究一个新的问题命名为\emph{min-max edge $q$-coloring},这是在无线网状网络中的应用的动机。问题的输入由无向图和整数$q$组成。目标是用尽可能多的颜色对图的边进行着色,使得:(a)任何顶点与至多$q$不同的颜色关联,以及(b)颜色组(即相同着色的边的集合)的最大大小被最小化。结果表明:1.最小-最大边$q$ -着色是NP难的,对于任何$q \ge 2$。2.树的极大极小边$q$ -染色的多项式时间精确算法。3.团最优解的精确公式及双团和超图的几乎紧界。4.最优解关于图的平均度的一个非平凡下界。5.平面图的一种近似算法。

英文摘要:

In this paper we introduce and study a new problem named \emph{min-max edge $q$-coloring} which is motivated by applications in wireless mesh networks. The input of the problem consists of an undirected graph and an integer $q$. The goal is to color the edges of the graph with as many colors as possible such that: (a) any vertex is incident to at most $q$ different colors, and (b) the maximum size of a color group (i.e. set of edges identically colored) is minimized. We show the following results: 1. Min-max edge $q$-coloring is NP-hard, for any $q \ge 2$. 2. A polynomial time exact algorithm for min-max edge $q$-coloring on trees. 3. Exact formulas of the optimal solution for cliques and almost tight bounds for bicliques and hypergraphs. 4. A non-trivial lower bound of the optimal solution with respect to the average degree of the graph. 5. An approximation algorithm for planar graphs.

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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