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Title: Prior-Aware Distribution Estimation for Differential Privacy

Citation Type: Miscellaneous

Publication Year: 2021

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Abstract: Joint distribution estimation of a dataset under differential privacy is a fundamental problem for many privacy-focused applications, such as query answering, machine learning tasks and synthetic data generation. In this work, we examine the joint distribution estimation problem given two data points: 1) differentially private answers of a workload computed over private data and 2) a prior empirical distribution from a public dataset. Our goal is to find a new distribution such that estimating the workload using this distribution is as accurate as the differentially private answer, and the relative entropy, or KL divergence, of this distribution is minimized with respect to the prior distribution. We propose an approach based on iterative optimization for solving this problem. An application of our solution won second place in the NIST 2020 Differential Privacy Temporal Map Challenge, Sprint 2.

Url: https://arxiv.org/pdf/2106.05131.pdf

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Authors: Tao, Yuchao; Bater, Johes; Machanavajjhala, Ashwin

Publisher: Duke University

Data Collections: IPUMS USA

Topics: Methodology and Data Collection, Other

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