Simulation-based Bayesian Inference from Privacy Protected Data

Fuente: arXiv
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Hauptverfasser: Xiong, Yifei, Ju, Nianqiao Phyllis, Zhang, Sanguo
Format: Preprint
Veröffentlicht: 2023
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author Xiong, Yifei
Ju, Nianqiao Phyllis
Zhang, Sanguo
author_facet Xiong, Yifei
Ju, Nianqiao Phyllis
Zhang, Sanguo
contents Many modern statistical analysis and machine learning applications require training models on sensitive user data. Under a formal definition of privacy protection, differentially private algorithms inject calibrated noise into the confidential data or during the data analysis process to produce privacy-protected datasets or queries. However, restricting access to only privatized data during statistical analysis makes it computationally challenging to make valid statistical inferences. In this work, we propose simulation-based inference methods from privacy-protected datasets. In addition to sequential Monte Carlo approximate Bayesian computation, we adopt neural conditional density estimators as a flexible family of distributions to approximate the posterior distribution of model parameters given the observed private query results. We illustrate our methods on discrete time-series data under an infectious disease model and with ordinary linear regression models. Illustrating the privacy-utility trade-off, our experiments and analysis demonstrate the necessity and feasibility of designing valid statistical inference procedures to correct for biases introduced by the privacy-protection mechanisms.
format Preprint
id arxiv_https___arxiv_org_abs_2310_12781
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Simulation-based Bayesian Inference from Privacy Protected Data
Xiong, Yifei
Ju, Nianqiao Phyllis
Zhang, Sanguo
Machine Learning
Computation
Many modern statistical analysis and machine learning applications require training models on sensitive user data. Under a formal definition of privacy protection, differentially private algorithms inject calibrated noise into the confidential data or during the data analysis process to produce privacy-protected datasets or queries. However, restricting access to only privatized data during statistical analysis makes it computationally challenging to make valid statistical inferences. In this work, we propose simulation-based inference methods from privacy-protected datasets. In addition to sequential Monte Carlo approximate Bayesian computation, we adopt neural conditional density estimators as a flexible family of distributions to approximate the posterior distribution of model parameters given the observed private query results. We illustrate our methods on discrete time-series data under an infectious disease model and with ordinary linear regression models. Illustrating the privacy-utility trade-off, our experiments and analysis demonstrate the necessity and feasibility of designing valid statistical inference procedures to correct for biases introduced by the privacy-protection mechanisms.
title Simulation-based Bayesian Inference from Privacy Protected Data
topic Machine Learning
Computation
url https://arxiv.org/abs/2310.12781