arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2004.07740stat.MLcs.LG
收藏

真正有用的合成数据--一个评估不同私有合成数据质量的框架

Really Useful Synthetic Data -- A Framework to Evaluate the Quality of Differentially Private Synthetic Data

Cardiff University(卡迪夫大学);University of Mannheim(曼海姆大学)

Christian Arnold, Marcel Neunhoeffer

摘要:

最近在生成合成数据方面取得的进展,允许增加保护隐私的原则性方法-如差别隐私-是以保护隐私的方式分享统计信息的关键一步。但是,虽然重点一直放在隐私保障上,但由此产生的私人合成数据只有在仍然包含原始数据的统计信息时才有用。为了进一步优化数据隐私和数据质量之间的内在权衡,有必要仔细考虑后者。数据分析师想要什么?承认数据质量是一个主观的概念,我们开发了一个框架来评估质量的差异私人合成数据从应用研究人员的角度来看。数据质量可以从两个维度来衡量。首先,合成数据的质量可以根据训练数据或基础人群进行评估。其次,合成数据的质量取决于分布的一般相似性或特定任务,如推理或预测。显然,同时兼顾所有目标是一项艰巨的挑战。我们邀请学术界共同推进隐私质量前沿。

英文摘要:

Recent advances in generating synthetic data that allow to add principled ways of protecting privacy -- such as Differential Privacy -- are a crucial step in sharing statistical information in a privacy preserving way. But while the focus has been on privacy guarantees, the resulting private synthetic data is only useful if it still carries statistical information from the original data. To further optimise the inherent trade-off between data privacy and data quality, it is necessary to think closely about the latter. What is it that data analysts want? Acknowledging that data quality is a subjective concept, we develop a framework to evaluate the quality of differentially private synthetic data from an applied researcher's perspective. Data quality can be measured along two dimensions. First, quality of synthetic data can be evaluated against training data or against an underlying population. Second, the quality of synthetic data depends on general similarity of distributions or specific tasks such as inference or prediction. It is clear that accommodating all goals at once is a formidable challenge. We invite the academic community to jointly advance the privacy-quality frontier.

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。

↑