Vertex-Frequency Analysis on Directed Graphs
Sign Up to like & getrecommendations! Published in 2025 at "IEEE Transactions on Signal Processing"
DOI: 10.1109/tsp.2025.3567831
Abstract: Vertex-frequency analysis (VFA) is a useful technique in graph signal processing to extract the correspondence between frequencies and vertices. VFA can be calculated by the windowed graph Fourier transform (WGFT) and the localized graph Fourier… read more here.
Keywords: graph fourier; fourier transform; directed graphs; vertex frequency ... See more keywords
Local Smoothness of Graph Signals
Sign Up to like & getrecommendations! Published in 2019 at "Mathematical Problems in Engineering"
DOI: 10.1155/2019/3208569
Abstract: Analysis of vertex-varying spectral content of signals on graphs challenges the assumption of vertex invariance and requires the introduction of vertex-frequency representations as a new tool for graph signal analysis. Local smoothness, an important parameter… read more here.
Keywords: vertex frequency; graph signals; smoothness; local smoothness ... See more keywords
From Time–Frequency to Vertex–Frequency and Back
Sign Up to like & getrecommendations! Published in 2021 at "Mathematics"
DOI: 10.3390/math9121407
Abstract: The paper presents an analysis and overview of vertex–frequency analysis, an emerging area in graph signal processing. A strong formal link of this area to classical time–frequency analysis is provided. Vertex–frequency localization-based approaches to analyzing… read more here.
Keywords: time frequency; vertex frequency; frequency; analysis ... See more keywords