期刊
JOURNAL OF MATHEMATICAL PHYSICS
卷 53, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4748305
关键词
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资金
- National Science Foundation of China [11071224]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
Random walks on weighted complex networks, especially scale-free networks, have attracted considerable interest in the past. But the efficiency of a hub sending information on scale-free small-world networks has been addressed less. In this paper, we study random walks on a class of weighted Koch networks with scaling factor 0 < r <= 1. We derive some basic properties for random walks on the weighted Koch networks, based on which we calculate analytically the average sending time (AST) defined as the average of mean first-passage times (MFPTs) from a hub node to all other nodes, excluding the hub itself. The obtained result displays that for 0 < r < 1 in large networks the AST grows as a power-law function of the network order with the exponent, represented by log(4) 3r+1/r, and for r = 1 in large networks the AST grows with network order as N ln N, which is larger than the linear scaling of the average receiving time defined as the average of MFPTs for random walks to a given hub node averaged over all starting points. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4748305]
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