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arXiv 1805.06151cs.DScs.DC
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改进的最坏情况确定性并行动态最小生成森林算法

Improved Worst-Case Deterministic Parallel Dynamic Minimum Spanning Forest

Tsvi Kopelowitz, Ely Porat, Yair Rosenmutter

摘要:

针对EREW PRAM模型中的动态最小生成森林(MSF)问题,给出了一种新的确定性算法,目标是在支持边插入和删除的同时,保持具有$n$顶点和$m$边的加权图的MSF.我们可以解决动态MSF问题,使用$O(\sqrt n)$处理器和$O(\log n)$最坏情况下的更新时间,共$O(\sqrt n \log n)$的工作。这改进了Ferragina [IPPS 1995]的工作,其花费了$O(\log n)$最差情况更新时间和$O(n^{2/3} \log{\frac{m}{n}})$工作。

英文摘要:

This paper gives a new deterministic algorithm for the dynamic Minimum Spanning Forest (MSF) problem in the EREW PRAM model, where the goal is to maintain a MSF of a weighted graph with $n$ vertices and $m$ edges while supporting edge insertions and deletions. We show that one can solve the dynamic MSF problem using $O(\sqrt n)$ processors and $O(\log n)$ worst-case update time, for a total of $O(\sqrt n \log n)$ work. This improves on the work of Ferragina [IPPS 1995] which costs $O(\log n)$ worst-case update time and $O(n^{2/3} \log{\frac{m}{n}})$ work.

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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