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arXiv 2212.00484cs.LGcs.CR
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用于高效重识别风险控制的差分隐私数据合成

Differentially-Private Data Synthetisation for Efficient Re-Identification Risk Control

Faculty of Sciences, University of Porto(波尔图大学理学院);Lucy Family Institute for Data & Society, University of Notre Dame(圣母大学露西数据与社会家族研究所);TekPrivacy(TekPrivacy公司)

Tânia Carvalho, Nuno Moniz, Luís Antunes, Nitesh Chawla

AI总结:

提出 $ε$-PrivateSMOTE 技术,结合噪声诱导插值与差分隐私生成合成数据,有效防范重识别攻击,在隐私风险和预测性能上优于现有方法,且时间效率提升至少 9 倍。

摘要:

保护用户数据隐私可以通过多种方法实现,从统计变换到生成模型。然而,所有这些方法都有致命缺陷。例如,使用传统技术创建变换数据集非常耗时。此外,最近基于深度学习的解决方案除了需要漫长的训练阶段外,还需要大量的计算资源,而基于差分隐私的解决方案可能会损害数据效用。在本文中,我们提出了 $ε$-PrivateSMOTE,这是一种旨在防范重识别和链接攻击的技术,特别针对具有高重识别风险的情况。我们的提案将通过噪声诱导插值进行的合成数据生成与差分隐私原则相结合,以混淆高风险案例。我们展示了与多种传统和最先进的隐私保护方法(包括生成对抗网络、变分自编码器和差分隐私基线)相比,$ε$-PrivateSMOTE 如何能够在隐私风险和更好的预测性能方面取得有竞争力的结果。我们还展示了我们的方法如何将时间需求提高至少 9 倍,并且是一种资源高效的解决方案,可确保在没有专用硬件的情况下实现高性能。

英文摘要:

Protecting user data privacy can be achieved via many methods, from statistical transformations to generative models. However, all of them have critical drawbacks. For example, creating a transformed data set using traditional techniques is highly time-consuming. Also, recent deep learning-based solutions require significant computational resources in addition to long training phases, and differentially private-based solutions may undermine data utility. In this paper, we propose $ε$-PrivateSMOTE, a technique designed for safeguarding against re-identification and linkage attacks, particularly addressing cases with a high \sloppy re-identification risk. Our proposal combines synthetic data generation via noise-induced interpolation with differential privacy principles to obfuscate high-risk cases. We demonstrate how $ε$-PrivateSMOTE is capable of achieving competitive results in privacy risk and better predictive performance when compared to multiple traditional and state-of-the-art privacy-preservation methods, including generative adversarial networks, variational autoencoders, and differential privacy baselines. We also show how our method improves time requirements by at least a factor of 9 and is a resource-efficient solution that ensures high performance without specialised hardware.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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