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arXiv 1703.09533cs.CGcs.DS
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多边形域中的布线

Routing in Polygonal Domains

Bahareh Banyassady, Man-Kwun Chiu, Matias Korman, Wolfgang Mulzer, André van Renssen, Marcel Roeloffzen, Paul Seiferth, Yannik Stein, Birgit Vogtenhuber, Max Willert

摘要:

我们考虑的问题,通过多边形域$P$与$n$顶点和$h$孔的可见性图的路由数据包。我们可以对$P$进行预处理,以获得$P$的每个顶点的标签和路由表。然后,我们必须能够在$P$的任意两个顶点$p$和$q$之间路由数据分组,其中每个步骤必须仅使用目标节点$q$的标签和当前节点的路由表。对于任何固定的$\varepsilon > 0$,我们提出了一种路由方案,总是实现路由路径的长度超过最短路径的一个因素,最多$1 + \varepsilon$。标签具有$O(\log n)$位,路由表的大小为$O((\varepsilon^{-1}+h)\log n)$。预处理时间为$O(n^2\log n)$。对于简单多边形,它可以改进为$O(n^2)$。

英文摘要:

We consider the problem of routing a data packet through the visibility graph of a polygonal domain $P$ with $n$ vertices and $h$ holes. We may preprocess $P$ to obtain a label and a routing table for each vertex of $P$. Then, we must be able to route a data packet between any two vertices $p$ and $q$ of $P$, where each step must use only the label of the target node $q$ and the routing table of the current node. For any fixed $\varepsilon > 0$, we present a routing scheme that always achieves a routing path whose length exceeds the shortest path by a factor of at most $1 + \varepsilon$. The labels have $O(\log n)$ bits, and the routing tables are of size $O((\varepsilon^{-1}+h)\log n)$. The preprocessing time is $O(n^2\log n)$. It can be improved to $O(n^2)$ for simple polygons.

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。

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