GraphCL: Contrastive Self-Supervised Learning of Graph Representations

Hakim Hafidi; Mounir Ghogho; Philippe Ciblat; Ananthram Swami

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arXiv · 2007.08025

GraphCL: Contrastive Self-Supervised Learning of Graph Representations

Hakim Hafidi·Mounir Ghogho·Philippe Ciblat·Ananthram Swami

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Abstract

We propose Graph Contrastive Learning (GraphCL), a general framework for learning node representations in a self supervised manner. GraphCL learns node embeddings by maximizing the similarity between the representations of two randomly perturbed versions of the intrinsic features and link structure of the same node's local subgraph. We use graph neural networks to produce two representations of the same node and leverage a contrastive learning loss to maximize agreement between them. In both transductive and inductive learning setups, we demonstrate that our approach significantly outperforms the state-of-the-art in unsupervised learning on a number of node classification benchmarks.

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Hakim Hafidi, Mounir Ghogho, Philippe Ciblat, Ananthram Swami. 2020-07-15. GraphCL: Contrastive Self-Supervised Learning of Graph Representations. https://arxiv.org/abs/2007.08025

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