The Cover Time of Deterministic Random Walks

The Cover Time of Deterministic Random Walks
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确定性随机游走的覆盖时间

DOI:
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发表时间:
2010
影响因子:
0.7
通讯作者:
Thomas Sauerwald
Thomas Sauerwald
中科院分区:
数学4区
文献类型:
--
作者:
T. Friedrich;Thomas Sauerwald

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转子路由器模型是图上随机游走的流行确定性模拟。不是移动到随机邻居,而是以固定顺序为邻居提供服务。我们检查这种“确定性随机游走”覆盖所有顶点(或所有边)的速度有多快。我们提出了通用技术来导出顶点和边覆盖时间的上限,并导出几个重要图类的匹配下界。根据拓扑结构,与经典随机游走相比,确定性随机游走可以渐近更快、更慢或同样快。
The rotor router model is a popular deterministic analogue of a random walk on a graph. Instead of moving to a random neighbor, the neighbors are served in a fixed order. We examine how fast this "deterministic random walk" covers all vertices (or all edges). We present general techniques to derive upper bounds for the vertex and edge cover time and derive matching lower bounds for several important graph classes. Depending on the topology, the deterministic random walk can be asymptotically faster, slower or equally fast compared to the classical random walk.
使用对数内存进行树探索
DOI: 10.1145/1921659.1921663
发表时间: 2011
影响因子: 1.3
作者:
Ambühl C
通讯作者: Ambühl C