Resilient Distributed Averaging

In this paper, a fully distributed averaging algorithm in the presence of adversarial Byzantine agents is proposed. The algorithm is based on a resilient retrieval procedure, where all non-Byzantine nodes send their own initial values and retrieve those of other agents. We establish that the convergence of the proposed algorithm relies on strong robustness of the graph, which is a connectivity notion. Simulation results are provided to verify the effectiveness of the proposed algorithms.