Strong ties promote the epidemic prevalence in susceptible–infected–susceptible spreading dynamics

Ai-Xiang Cui, Zimo Yang and Tao Zhou

Physica A: Statistical Mechanics and its Applications, 2016, vol. 445, issue C, 335-342

Abstract: We propose a weighted susceptible–infected–susceptible model on complex networks, where the weight of an edge is defined by the topological proximity of the two associated nodes. Each infected individual is allowed to select a limited number of neighbors to contact, and a tunable parameter is introduced to control the preference to contact through high-weight or low-weight edges. Simulation results on six real networks show that the epidemic prevalence can be largely promoted when strong ties are favored. By comparing with two statistical null models, we show that the distribution pattern of weights, rather than the topological structure, mainly contributes to the observations. Further analysis suggests that the weight–weight correlation strongly affects the results: high-weight edges are more significant in keeping high epidemic prevalence when the weight–weight correlation is positive.

Keywords: Complex networks; Epidemic spreading; Strong ties; Susceptible–Infected–Susceptible model (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:445:y:2016:i:c:p:335-342

DOI: 10.1016/j.physa.2015.10.021

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