Offline Algorithms for Dynamic Minimum Spanning Tree Problems

Offline Algorithms for Dynamic Minimum Spanning Tree Problems
复制标题

动态最小生成树问题的离线算法

DOI:
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发表时间:
1991
期刊:
J. Algorithms
影响因子:
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通讯作者:
D. Eppstein
D. Eppstein
中科院分区:
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文献类型:
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作者:
D. Eppstein

文献摘要

被引文献

相似文献

我们描述了一个有效的算法,用于维护最小生成树(MST)在一个图中的一系列的边权重修改。在已知修改序列之后,离线计算最小生成树序列。算法每次修改执行O(log n)的工作,其中n是图中的顶点数。我们使用我们的技术来解决离线几何MST问题的平面点集插入和删除,我们的算法为这个问题进行O(log2n)的工作每次修改。没有以前的动态几何MST算法是已知的。
We describe an efficient algorithm for maintaining a minimum spanning tree (MST) in a graph subject to a sequence of edge weight modifications. The sequence of minimum spanning trees is computed offline, after the sequence of modifications is known. The algorithm performs O(log n) work per modification, where n is the number of vertices in the graph. We use our techniques to solve the offline geometric MST problem for a planar point set subject to insertions and deletions; our algorithm for this problem performs O(log2n) work per modification. No previous dynamic geometric MST algorithm was known.