Incremental and decremental maintenance of planar width

Incremental and decremental maintenance of planar width
复制标题

平面宽度的增量和减量维护

DOI:
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发表时间:
1998
期刊:
ACM-SIAM Symposium on Discrete 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

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我们提出了一种算法,用于保持平面点集的宽度动态,点插入或删除。我们的算法每次更新的时间为O(kn^n),其中k是更新在凸船体中引起的变化量,n是集合中的点的数量,并且n是任意小的常数。对于增量或减量更新序列,每次更新的摊销时间是O(n^n)。
We present an algorithm for maintaining the width of a planar point set dynamically, as points are inserted or deleted. Our algorithm takes time O(kn^epsilon) per update, where k is the amount of change the update causes in the convex hull, n is the number of points in the set, and epsilon is any arbitrarily small constant. For incremental or decremental update sequences, the amortized time per update is O(n^epsilon).