The electrical resistance of a graph captures its commute and cover times
STOC '89 Proceedings of the twenty-first annual ACM symposium on Theory of computing
Token management schemes and random walks yield self-stabilizing mutual exclusion
PODC '90 Proceedings of the ninth annual ACM symposium on Principles of distributed computing
A new method to automatically compute processing times for random walks based distributed algorithms
ISPDC'03 Proceedings of the Second international conference on Parallel and distributed computing
Topological adaptability for the distributed token circulation paradigm in faulty environment
ISPA'04 Proceedings of the Second international conference on Parallel and Distributed Processing and Applications
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The problem of evaluating time complexity of random distributed algorithms is considered. A common and natural way to randomize a distributed algorithm is to use random walks i.e. memoryless stochastic processes: a “token” message circulates in the system and, at each step, the node that owns it sends it to one of its neighbors chosen at random. The token usually contains some pieces of information or part of the result of some distributed computing for instance. In this paper we focus on the cover time, defined by the expected time to visit all nodes in the system. This quantity often appears in the complexity of random walk based distributed algorithms. We provide a general method to compute the cover time on any arbitrary graph modeling a distributed system.