Simple Concurrent Labeling Algorithms for Connected Components
Simple Concurrent Labeling Algorithms for Connected Components
复制标题
连接组件的简单并发标记算法
DOI:
--
复制
发表时间:
2018
期刊:
影响因子:
--
通讯作者:
R. Tarjan
中科院分区:
文献类型:
--
作者:
Sixue Liu;R. Tarjan
We study a class of simple algorithms for concurrently computing the connected components of an $n$-vertex, $m$-edge graph. Our algorithms are easy to implement in either the COMBINING CRCW PRAM or the MPC computing model. For two related algorithms in this class, we obtain $\Theta(\lg n)$ step and $\Theta(m \lg n)$ work bounds. For two others, we obtain $O(\lg^2 n)$ step and $O(m \lg^2 n)$ work bounds, which are tight for one of them. All our algorithms are simpler than related algorithms in the literature. We also point out some gaps and errors in the analysis of previous algorithms. Our results show that even a basic problem like connected components still has secrets to reveal.