Random Walks on Small World Networks
Random Walks on Small World Networks
复制标题
小世界网络上的随机游走
DOI:
10.1145/3382208
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发表时间:
2020
影响因子:
1.3
通讯作者:
Dyer M
中科院分区:
文献类型:
--
作者:
Dyer M
We study the mixing time of random walks on small-world networks modelled as follows: starting with the 2-dimensional periodic grid, each pair of vertices {u,v} with distance d> 1 is added as a “long-range” edge with probability proportional to d-r, where r≥ 0 is a parameter of the model. Kleinberg [33{ studied a close variant of this network model and proved that the (decentralised) routing time is O((logn)2) whenr=2 and nΩ (1)when r≠ 2. Here, we prove that the random walk also undergoes a phase transition atr=2, but in this case, the phase transition is of a different form. We establish that the mixing time is ϴ (log n) for r< 2, O((logn)4) forr=2, andnΩ (1)for r> 2.