Certified Defense on the Fairness of Graph Neural Networks

Fuente: arXiv
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Autori principali: Dong, Yushun, Zhang, Binchi, Tong, Hanghang, Li, Jundong
Natura: Preprint
Pubblicazione: 2023
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author Dong, Yushun
Zhang, Binchi
Tong, Hanghang
Li, Jundong
author_facet Dong, Yushun
Zhang, Binchi
Tong, Hanghang
Li, Jundong
contents Graph Neural Networks (GNNs) have emerged as a prominent graph learning model in various graph-based tasks over the years. Nevertheless, due to the vulnerabilities of GNNs, it has been empirically shown that malicious attackers could easily corrupt the fairness level of their predictions by adding perturbations to the input graph data. In this paper, we take crucial steps to study a novel problem of certifiable defense on the fairness level of GNNs. Specifically, we propose a principled framework named ELEGANT and present a detailed theoretical certification analysis for the fairness of GNNs. ELEGANT takes {\em any} GNN as its backbone, and the fairness level of such a backbone is theoretically impossible to be corrupted under certain perturbation budgets for attackers. Notably, ELEGANT does not make any assumptions over the GNN structure or parameters, and does not require re-training the GNNs to realize certification. Hence it can serve as a plug-and-play framework for any optimized GNNs ready to be deployed. We verify the satisfactory effectiveness of ELEGANT in practice through extensive experiments on real-world datasets across different backbones of GNNs and parameter settings.
format Preprint
id arxiv_https___arxiv_org_abs_2311_02757
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Certified Defense on the Fairness of Graph Neural Networks
Dong, Yushun
Zhang, Binchi
Tong, Hanghang
Li, Jundong
Machine Learning
Cryptography and Security
Graph Neural Networks (GNNs) have emerged as a prominent graph learning model in various graph-based tasks over the years. Nevertheless, due to the vulnerabilities of GNNs, it has been empirically shown that malicious attackers could easily corrupt the fairness level of their predictions by adding perturbations to the input graph data. In this paper, we take crucial steps to study a novel problem of certifiable defense on the fairness level of GNNs. Specifically, we propose a principled framework named ELEGANT and present a detailed theoretical certification analysis for the fairness of GNNs. ELEGANT takes {\em any} GNN as its backbone, and the fairness level of such a backbone is theoretically impossible to be corrupted under certain perturbation budgets for attackers. Notably, ELEGANT does not make any assumptions over the GNN structure or parameters, and does not require re-training the GNNs to realize certification. Hence it can serve as a plug-and-play framework for any optimized GNNs ready to be deployed. We verify the satisfactory effectiveness of ELEGANT in practice through extensive experiments on real-world datasets across different backbones of GNNs and parameter settings.
title Certified Defense on the Fairness of Graph Neural Networks
topic Machine Learning
Cryptography and Security
url https://arxiv.org/abs/2311.02757