Spectral Graph Neural Network
Spectral graph neural networks (SGNNs) leverage the spectral properties of graphs—eigenvalues and eigenvectors of the graph Laplacian—to perform graph-based machine learning tasks. Current research focuses on improving the efficiency and expressiveness of SGNNs, exploring various polynomial filter designs and incorporating attention mechanisms to learn node-specific filters, addressing issues like over-smoothing and over-squashing. These advancements enhance the ability of SGNNs to capture both local and global graph structure, leading to improved performance in diverse applications such as node classification, graph representation learning, and solving partial differential equations on irregular domains.
Papers
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