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Reducing the Height of Independent Spanning Trees in Chordal Rings

机译:降低弦环中独立生成树的高度

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This paper is concerned with a particular family of regular 4-connected graphs, called chordal rings. Chordal rings are a variation of ring networks. By adding two extra links (or chords) at each vertex in a ring network, the reliability and fault-tolerance of the network are enhanced. Two spanning trees on a graph are said to be independent if they are rooted at the same vertex, say, r, and for each vertex v neq r, the two paths from r to v, one path in each tree, are internally disjoint. A set of spanning trees on a given graph is said to be independent if they are pairwise independent. Iwasaki et al. [CHECK END OF SENTENCE] proposed a linear time algorithm for finding four independent spanning trees on a chordal ring. In this paper, we give a new linear time algorithm to generate four independent spanning trees with a reduced height in each tree. Moreover, a complete analysis of our improvements on the heights of independent spanning trees is also provided.
机译:本文涉及一类特殊的规则4连通图,称为弦环。弦环是环网的一种变体。通过在环形网络的每个顶点处添加两个额外的链接(或和弦),可以增强网络的可靠性和容错能力。如果图上的两个生成树以相同的顶点(例如r)为根,则它们是独立的,并且对于每个顶点v neq r,从r到v的两条路径(每棵树中的一条路径)在内部是不相交的。如果给定图上的一组生成树是成对独立的,则称它们是独立的。岩崎等。 [句子的检查结束]提出了一种线性时间算法,用于在弦环上找到四个独立的生成树。在本文中,我们给出了一种新的线性时间算法,以生成四棵独立的生成树,每棵树的高度都减小。此外,还提供了我们对独立生成树高度改进的完整分析。

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