arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.01029cs.CG
收藏

高维范围最近对搜索

Range closest-pair search in higher dimensions

Timothy M. Chan, Saladi Rahul, Jie Xue

摘要:

范围最近对(RCP)搜索是经典最近对问题的范围搜索变体,其目的是将给定的点集合$S$存储到某种空间有效的数据结构中,使得当指定查询范围$Q$时,可以快速报告$S \cap Q$中的最近对。多年来,RCP检索一直受到关注,但主要关注点仅在$\mathbb{R}^2$上。本文研究了高维情形下的RCP搜索。我们给出了第一个非平凡的RCP数据结构的正交,单纯形,半空间,球查询在$\mathbb{R}^d$的任何常数$d$。此外,我们还证明了$d \geq 3$正交RCP搜索的一个条件下界。

英文摘要:

Range closest-pair (RCP) search is a range-search variant of the classical closest-pair problem, which aims to store a given set $S$ of points into some space-efficient data structure such that when a query range $Q$ is specified, the closest pair in $S \cap Q$ can be reported quickly. RCP search has received attention over years, but the primary focus was only on $\mathbb{R}^2$. In this paper, we study RCP search in higher dimensions. We give the first nontrivial RCP data structures for orthogonal, simplex, halfspace, and ball queries in $\mathbb{R}^d$ for any constant $d$. Furthermore, we prove a conditional lower bound for orthogonal RCP search for $d \geq 3$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑