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Dynamic Planar Voronoi Diagrams for General Distance Functions and Their Algorithmic Applications
Discrete & Computational Geometry ( IF 0.6 ) Pub Date : 2020-09-22 , DOI: 10.1007/s00454-020-00243-7
Haim Kaplan , Wolfgang Mulzer , Liam Roditty , Paul Seiferth , Micha Sharir

We describe a new data structure for dynamic nearest neighbor queries in the plane with respect to a general family of distance functions. These include $L_p$-norms and additively weighted Euclidean distances. Our data structure supports general (convex, pairwise disjoint) sites that have constant description complexity (e.g., points, line segments, disks, etc.). Our structure uses $O(n \log^3 n)$ storage, and requires polylogarithmic update and query time, improving an earlier data structure of Agarwal, Efrat and Sharir that required $O(n^\varepsilon)$ time for an update and $O(\log n)$ time for a query [SICOMP, 1999]. Our data structure has numerous applications. In all of them, it gives faster algorithms, typically reducing an $O(n^\varepsilon)$ factor in the previous bounds to polylogarithmic. In addition, we give here two new applications: an efficient construction of a spanner in a disk intersection graph, and a data structure for efficient connectivity queries in a dynamic disk graph.

中文翻译:

一般距离函数的动态平面 Voronoi 图及其算法应用

我们描述了一种新的数据结构,用于关于一般距离函数族的平面中动态最近邻查询。这些包括 $L_p$-norms 和加法加权欧几里德距离。我们的数据结构支持具有恒定描述复杂度(例如,点、线段、圆盘等)的一般(凸面、成对不相交)站点。我们的结构使用 $O(n \log^3 n)$ 存储,并且需要多对数更新和查询时间,改进了 Agarwal、Efrat 和 Sharir 的早期数据结构,需要 $O(n^\varepsilon)$ 时间进行更新和 $O(\log n)$ 查询时间 [SICOMP, 1999]。我们的数据结构有很多应用。在所有这些中,它提供了更快的算法,通常将先前边界中的 $O(n^\varepsilon)$ 因子减少到多对数。此外,我们在这里给出了两个新的应用程序:
更新日期:2020-09-22
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