Papers › On Graph Uncertainty Principle and Eigenvector Delocalization
On Graph Uncertainty Principle and Eigenvector Delocalization
Elizaveta Rebrova, Palina Salanevich
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Uncertainty principles present an important theoretical tool in signal processing, as they provide limits on the time-frequency concentration of a signal. In many real-world applications the signal domain has a complicated irregular structure that can be described by a graph. In this paper, we focus on the global uncertainty principle on graphs and propose new connections between the uncertainty bound for graph signals and graph eigenvectors delocalization. We also derive uncertainty bounds for random d-regular graphs and provide numerically efficient upper and lower approximations for the uncertainty bound on an arbitrary graph.
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