Sieve method for consensus-type network tomography

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Sieve method for consensus-type network tomography

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In this note, the authors examine the problem of identifying the interaction geometry among a known number of agents, adopting a consensus-type algorithm for their coordination. The proposed identification process is facilitated by introducing ‘ports’ for stimulating a subset of network vertices via an appropriately defined interface and observing the network’s response at another set of vertices. It is first noted that under the assumption of controllability and observability of corresponding steered-and-observed network, the proposed procedure identifies a number of important features of the network using the spectrum of the graph Laplacian. The authors then proceed to use degree-based graph reconstruction methods to propose a sieve method for further characterisation of the underlying network. An example demonstrates the application of the proposed method.

Inspec keywords: graph theory; controllability; observability; network theory (graphs)

Other keywords: observability; identification process; controllability; consensus-type network tomography; degree-based graph reconstruction method; steered-and-observed network; graph Laplacian spectrum; network vertex; sieve method; interaction geometry identification; network response; consensus-type algorithm

Subjects: Control system analysis and synthesis methods; Algebra, set theory, and graph theory; Combinatorial mathematics; Combinatorial mathematics; Combinatorial mathematics

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