Title
Viral processes by random walks on random regular graphs
Abstract
We study the SIR epidemic model with infections carried by k particles making independent random walks on a random regular graph. We give a edge-weighted graph reduction of the dynamics of the process that allows us to apply standard results of Erdös-Renyi random graphs on the particle set. In particular, we show how the parameters of the model produce two phase transitions: In the subcritical regime, O(ln k) particles are infected. In the supercritical regime, for a constant C determined by the parameters of the model, Ck get infected with probability C, and O(ln k) get infected with probability (1-C). Finally, there is a regime in which all k particles are infected. Furthermore, the edge weights give information about when a particle becomes infected. We demonstrate how this can be exploited to determine the completion time of the process by applying a result of Janson on randomly edge weighted graphs.
Year
DOI
Venue
2011
10.1214/13-AAP1000
Annals of Applied Probability
Keywords
DocType
Volume
sir epidemic model,constant c,edge weight,random regular graph,ln k,supercritical regime,subcritical regime,independent random walk,viral process,s-renyi random graph,k particle,random graphs,random walks
Conference
25
Issue
ISSN
Citations 
2
Annals of Applied Probability 2015, Vol. 25, 477-522
1
PageRank 
References 
Authors
0.35
14
3
Name
Order
Citations
PageRank
Mohammed Abdullah140.81
Colin Cooper285791.88
Moez Draief316818.57