English

The Projection Method for Reaching Consensus and the Regularized Power Limit of a Stochastic Matrix

Multiagent Systems 2012-02-07 v2 Networking and Internet Architecture Systems and Control Optimization and Control Probability

Abstract

In the coordination/consensus problem for multi-agent systems, a well-known condition of achieving consensus is the presence of a spanning arborescence in the communication digraph. The paper deals with the discrete consensus problem in the case where this condition is not satisfied. A characterization of the subspace TPT_P of initial opinions (where PP is the influence matrix) that \emph{ensure} consensus in the DeGroot model is given. We propose a method of coordination that consists of: (1) the transformation of the vector of initial opinions into a vector belonging to TPT_P by orthogonal projection and (2) subsequent iterations of the transformation P.P. The properties of this method are studied. It is shown that for any non-periodic stochastic matrix P,P, the resulting matrix of the orthogonal projection method can be treated as a regularized power limit of P.P.

Keywords

Cite

@article{arxiv.1109.3948,
  title  = {The Projection Method for Reaching Consensus and the Regularized Power Limit of a Stochastic Matrix},
  author = {R. P. Agaev and P. Yu. Chebotarev},
  journal= {arXiv preprint arXiv:1109.3948},
  year   = {2012}
}

Comments

19 pages, 2 figures