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Continual Release of Differentially Private Synthetic Data from Longitudinal Data Collections

Published: 14 May 2024 Publication History

Abstract

Motivated by privacy concerns in long-term longitudinal studies in medical and social science research, we study the problem of continually releasing differentially private synthetic data from longitudinal data collections. We introduce a model where, in every time step, each individual reports a new data element, and the goal of the synthesizer is to incrementally update a synthetic dataset in a consistent way to capture a rich class of statistical properties. We give continual synthetic data generation algorithms that preserve two basic types of queries: fixed time window queries and cumulative time queries. We show nearly tight upper bounds on the error rates of these algorithms and demonstrate their empirical performance on realistically sized datasets from the U.S. Census Bureau's Survey of Income and Program Participation.

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  • (2024)Online Differentially Private Synthetic Data GenerationIEEE Transactions on Privacy10.1109/TP.2024.34866871(19-30)Online publication date: 2024

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cover image Proceedings of the ACM on Management of Data
Proceedings of the ACM on Management of Data  Volume 2, Issue 2
PODS
May 2024
852 pages
EISSN:2836-6573
DOI:10.1145/3665155
Issue’s Table of Contents
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Publication History

Published: 14 May 2024
Published in PACMMOD Volume 2, Issue 2

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  1. continual release
  2. differential privacy
  3. longitudinal data
  4. synthetic data

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  • (2024)Online Differentially Private Synthetic Data GenerationIEEE Transactions on Privacy10.1109/TP.2024.34866871(19-30)Online publication date: 2024

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