English

Learning Graph Augmentations to Learn Graph Representations

Machine Learning 2022-01-25 v1 Neural and Evolutionary Computing

Abstract

Devising augmentations for graph contrastive learning is challenging due to their irregular structure, drastic distribution shifts, and nonequivalent feature spaces across datasets. We introduce LG2AR, Learning Graph Augmentations to Learn Graph Representations, which is an end-to-end automatic graph augmentation framework that helps encoders learn generalizable representations on both node and graph levels. LG2AR consists of a probabilistic policy that learns a distribution over augmentations and a set of probabilistic augmentation heads that learn distributions over augmentation parameters. We show that LG2AR achieves state-of-the-art results on 18 out of 20 graph-level and node-level benchmarks compared to previous unsupervised models under both linear and semi-supervised evaluation protocols. The source code will be released here: https://github.com/kavehhassani/lg2ar

Keywords

Cite

@article{arxiv.2201.09830,
  title  = {Learning Graph Augmentations to Learn Graph Representations},
  author = {Kaveh Hassani and Amir Hosein Khasahmadi},
  journal= {arXiv preprint arXiv:2201.09830},
  year   = {2022}
}
R2 v1 2026-06-24T09:00:40.724Z