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:
影响因子:
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通讯作者:
D. Eppstein
中科院分区:
文献类型:
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作者:
D. Eppstein
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.