Online differentially private inference in stochastic gradient descent

Fuente: arXiv
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Autores principales: Xie, Jinhan, Shi, Enze, Jiang, Bei, Kong, Linglong, He, Xuming
Formato: Preprint
Publicado: 2025
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author Xie, Jinhan
Shi, Enze
Jiang, Bei
Kong, Linglong
He, Xuming
author_facet Xie, Jinhan
Shi, Enze
Jiang, Bei
Kong, Linglong
He, Xuming
contents We propose a general privacy-preserving optimization-based framework for real-time environments without requiring trusted data curators. In particular, we introduce a noisy stochastic gradient descent algorithm for online statistical inference with streaming data under local differential privacy constraints. Unlike existing methods that either disregard privacy protection or require full access to the entire dataset, our proposed algorithm provides rigorous local privacy guarantees for individual-level data. It operates as a one-pass algorithm without re-accessing the historical data, thereby significantly reducing both time and space complexity. We also introduce online private statistical inference by conducting two construction procedures of valid private confidence intervals. We formally establish the convergence rates for the proposed estimators and present a functional central limit theorem to show the averaged solution path of these estimators weakly converges to a rescaled Brownian motion, providing a theoretical foundation for our online inference tool. Numerical simulation experiments demonstrate the finite-sample performance of our proposed procedure, underscoring its efficacy and reliability. Furthermore, we illustrate our method with an analysis of two datasets: the ride-sharing data and the US insurance data, showcasing its practical utility.
format Preprint
id arxiv_https___arxiv_org_abs_2505_08227
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Online differentially private inference in stochastic gradient descent
Xie, Jinhan
Shi, Enze
Jiang, Bei
Kong, Linglong
He, Xuming
Methodology
We propose a general privacy-preserving optimization-based framework for real-time environments without requiring trusted data curators. In particular, we introduce a noisy stochastic gradient descent algorithm for online statistical inference with streaming data under local differential privacy constraints. Unlike existing methods that either disregard privacy protection or require full access to the entire dataset, our proposed algorithm provides rigorous local privacy guarantees for individual-level data. It operates as a one-pass algorithm without re-accessing the historical data, thereby significantly reducing both time and space complexity. We also introduce online private statistical inference by conducting two construction procedures of valid private confidence intervals. We formally establish the convergence rates for the proposed estimators and present a functional central limit theorem to show the averaged solution path of these estimators weakly converges to a rescaled Brownian motion, providing a theoretical foundation for our online inference tool. Numerical simulation experiments demonstrate the finite-sample performance of our proposed procedure, underscoring its efficacy and reliability. Furthermore, we illustrate our method with an analysis of two datasets: the ride-sharing data and the US insurance data, showcasing its practical utility.
title Online differentially private inference in stochastic gradient descent
topic Methodology
url https://arxiv.org/abs/2505.08227