Relevance
The vertex-frequency analysis presented here is a valuable tool that can be used to analyze vertex-varying changes in networks (graphs) such as brain networks (e.g., brain changes during consecutive swallows [8]), changes in social interactions in a large group of people, or to understand traffic patterns during rush hour in major metropolitan areas. Theoretically, it connects principles of the Fourier analysis and eigenvalue decomposition from undergraduate courses, to more advanced topics such as time-frequency representations typically taught at a graduate level.