On the exponential generating function for non-backtracking walks
On the exponential generating function for non-backtracking walks
复制标题
关于非回溯游走的指数生成函数
DOI:
10.1016/j.laa.2018.07.010
复制
发表时间:
2018
影响因子:
1.1
通讯作者:
V. Noferini
中科院分区:
文献类型:
--
作者:
F. Arrigo;P. Grindrod;D. Higham;V. Noferini
We derive an explicit formula for the exponential generating function associated with non-backtracking walks around a graph. We study both undirected and directed graphs. Our results allow us to derive computable expressions for non-backtracking versions of network centrality measures based on the matrix exponential. We find that eliminating backtracking walks in this context does not significantly increase the computational expense. We show how the new measures may be interpreted in terms of standard exponential centrality computation on a certain multilayer network. Insights from this block matrix interpretation also allow us to characterize centrality measures arising from general matrix functions. Rigorous analysis on the star graph illustrates the effect of non-backtracking and shows that localization can be eliminated when we restrict to non-backtracking walks. We also investigate the localization issue on synthetic networks.
DOI:
10.48550/arxiv.1705.05677
发表时间:
2017
期刊:
arXiv e-prints
影响因子:
--
作者:
Maugis
通讯作者:
Maugis
影响因子:
3.1
作者:
Al-Mohy, Awad H.;Higham, Nicholas J.
通讯作者:
Higham, Nicholas J.
影响因子:
3.1
作者:
Rostami, Minghao W.;Xue, Fei
通讯作者:
Xue, Fei