Vector-Quantized Graph Auto-Encoder

  • In this work, we addresses the problem of modeling distributions of graphs. We introduce the Vector-Quantized Graph Auto-Encoder (VQ-GAE), a permutation-equivariant discrete auto-encoder and designed to model the distribution of graphs. By exploiting the permutation-equivariance of graph neural networks (GNNs), our autoencoder circumvents the problem of the ordering of the graph representation. We leverage the capability of GNNs to capture local structures of graphs while employing vector-quantization to prevent the mapping of discrete objects to a continuous latent space. Furthermore, the use of autoregressive models enables us to capture the global structure of graphs via the latent representation. We evaluate our model on standard datasets used for graph generation and observe that it achieves excellent performance on some of the most salient evaluation metrics compared to the state-of-the-art.

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Metadaten
Author:Yoann Boget, Magda Gregorová, Alexandros Kalousis
DOI:https://doi.org/10.48550/arXiv.2306.07735
Parent Title (English):CoRR
Document Type:Article
Language:English
Year of publication:2023
Release Date:2024/01/22
Volume:abs/2306.07735
Institutes and faculty:Fakultäten / Fakultät Informatik und Wirtschaftsinformatik
Institute / Center for Artificial Intelligence (CAIRO)
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