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arXiv 1808.02591cs.DS
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任意权随机有向图在期望线性时间内的单源最短路算法

A practical Single Source Shortest Path algorithm for random directed graphs with arbitrary weight in expecting linear time

Dexin Li

摘要:

在本文中,我提出了一个算法称为Raffica算法的单源最短路径(SSSP)。在随机图上,该算法具有线性的时间复杂度(在期望范围内).更准确地说,随机图使用配置模型,并且权重大多为正分布。对于随机网格图,它也是线性的。尽管我对随机图的权值做了假设,但该算法能够求解任意权值的SSSP;当存在负环时,该算法一次遍历就能找到负环。该算法有很多应用。

英文摘要:

In this paper, I present an algorithm called Raffica algorithm for Single-Source Shortest Path(SSSP). On random graph, this algorithm has linear time complexity(in expect). More precisely, the random graph uses configuration model, and the weights are distributed mostly positively. It is also linear for random grid graphs. Despite I made an assumption on the weights of the random graph, this algorithm is able to solve SSSP with arbitrary weights; when a negative cycle exists, this algorithm can find it out once traversed. The algorithm has a lot of appliances.

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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