Title
Stationary distribution and cover time of random walks on random digraphs
Abstract
We study properties of a simple random walk on the random digraph D"n","p when np=dlogn, d1. We prove that whp the value @p"v of the stationary distribution at vertex v is asymptotic to deg^-(v)/m where deg^-(v) is the in-degree of v and m=n(n-1)p is the expected number of edges of D"n","p. If d=d(n)-~ with n, the stationary distribution is asymptotically uniform whp. Using this result we prove that, for d1, whp the cover time of D"n","p is asymptotic to dlog(d/(d-1))nlogn. If d=d(n)-~ with n, then the cover time is asymptotic to nlogn.
Year
DOI
Venue
2011
10.1016/j.jctb.2011.11.001
Journal of Combinatorial Theory
Keywords
DocType
Volume
simple random walk,expected number,random digraph,stationary distribution,cover time,asymptotically uniform whp,vertex v,random walk,discrete mathematics
Journal
102
Issue
ISSN
Citations 
2
0095-8956
7
PageRank 
References 
Authors
0.56
11
2
Name
Order
Citations
PageRank
Colin Cooper185791.88
Alan M. Frieze24837787.00