Convergence Time of Quantized Metropolis Consensus Over Time-Varying Networks.

We consider the quantized consensus problem on undirected time-varying connected graphs with $n$ nodes, and devise a protocol with fast convergence time to the set of consensus points. Specifically, we show that when the edges of each network in a sequence of connected time-varying networks are activated based on Poisson processes with Metropolis rates, the expected convergence time to the set of consensus points is at most O(n^{2}\log^{2}n), where each node performs a constant number of updates per unit time. [ABSTRACT FROM AUTHOR]