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Oversmoothing: A Nightmare for Graph Contrastive Learning?
Feb. 26, 2024, 5:44 a.m. | Jintang Li, Wangbin Sun, Ruofan Wu, Yuchang Zhu, Liang Chen, Zibin Zheng
cs.LG updates on arXiv.org arxiv.org
Abstract: Oversmoothing is a common phenomenon observed in graph neural networks (GNNs), in which an increase in the network depth leads to a deterioration in their performance. Graph contrastive learning (GCL) is emerging as a promising way of leveraging vast unlabeled graph data. As a marriage between GNNs and contrastive learning, it remains unclear whether GCL inherits the same oversmoothing defect from GNNs. This work undertakes a fundamental analysis of GCL from the perspective of oversmoothing …
abstract arxiv cs.ai cs.lg data gnns graph graph data graph neural networks leads marriage network networks neural networks performance type vast
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