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Deyu Bo

12 accepted papers

2023

Graph Contrastive Learning with Stable and Scalable Spectral Encoding

NeurIPS 2023poster

Graph contrastive learning (GCL) aims to learn representations by capturing the agreements between different graph views. Traditional GCL methods generate views in the spatial domain, but it has been recently discovered that the spectral domain also plays a vital role in complementing spatial views.…

Cited by 22SourcePDFScholar
2023

Specformer: Spectral Graph Neural Networks Meet Transformers

ICLR 2023poster

Spectral graph neural networks (GNNs) learn graph representations via spectral-domain graph convolutions. However, most existing spectral graph filters are scalar-to-scalar functions, i.e., mapping a single eigenvalue to a single filtered value, thus ignoring the global pattern of the spectrum. Furt…

2022

Regularizing Graph Neural Networks via Consistency-Diversity Graph Augmentations

AAAI 2022technical

Despite the remarkable performance of graph neural networks (GNNs) in semi-supervised learning, it is criticized for not making full use of unlabeled data and suffering from over-fitting. Recently, graph data augmentation, used to improve both accuracy and generalization of GNNs, has received consid…

Cited by 30SourcePDFScholar
2022

Revisiting Graph Contrastive Learning from the Perspective of Graph Spectrum

NeurIPS 2022accept

Graph Contrastive Learning (GCL), learning the node representations by augmenting graphs, has attracted considerable attentions. Despite the proliferation of various graph augmentation strategies, there are still some fundamental questions unclear: what information is essentially learned by GCL? Are…

2021

Beyond Low-frequency Information in Graph Convolutional Networks

AAAI 2021technical

Graph neural networks (GNNs) have been proven to be effective in various network-related tasks. Most existing GNNs usually exploit the low-frequency signals of node features, which gives rise to one fundamental question: is the low-frequency information all we need in the real world applications? In…