Efficient mean estimation with pure differential privacy via a sum-of-squares exponential mechanism
Efficient mean estimation with pure differential privacy via a sum-of-squares exponential mechanism
复制标题
通过平方和指数机制实现具有纯差分隐私的高效均值估计
DOI:
--
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Mahbod Majid
中科院分区:
文献类型:
--
作者:
Samuel B. Hopkins;Gautam Kamath;Mahbod Majid
We give the first polynomial-time algorithm to estimate the mean of a d-variate probability distribution with bounded covariance from Õ(d) independent samples subject to pure differential privacy. Prior algorithms for this problem either incur exponential running time, require Ω(d1.5) samples, or satisfy only the weaker concentrated or approximate differential privacy conditions. In particular, all prior polynomial-time algorithms require d1+Ω(1) samples to guarantee small privacy loss with “cryptographically” high probability, 1−2−dΩ(1), while our algorithm retains Õ(d) sample complexity even in this stringent setting. Our main technique is a new approach to use the powerful Sum of Squares method (SoS) to design differentially private algorithms. SoS proofs to algorithms is a key theme in numerous recent works in high-dimensional algorithmic statistics – estimators which apparently require exponential running time but whose analysis can be captured by low-degree Sum of Squares proofs can be automatically turned into polynomial-time algorithms with the same provable guarantees. We demonstrate a similar proofs to private algorithms phenomenon: instances of the workhorse exponential mechanism which apparently require exponential time but which can be analyzed with low-degree SoS proofs can be automatically turned into polynomial-time differentially private algorithms. We prove a meta-theorem capturing this phenomenon, which we expect to be of broad use in private algorithm design. Our techniques also draw new connections between differentially private and robust statistics in high dimensions. In particular, viewed through our proofs-to-private-algorithms lens, several well-studied SoS proofs from recent works in algorithmic robust statistics directly yield key components of our differentially private mean estimation algorithm.
登录
查看更多内容
DOI:
--
发表时间:
2018-05
期刊:
--
影响因子:
--
作者:
Gautam Kamath;Jerry Li;Vikrant Singhal;Jonathan Ullman
通讯作者:
Gautam Kamath;Jerry Li;Vikrant Singhal;Jonathan Ullman
DOI:
--
发表时间:
2020
期刊:
37th International Conference on Machine Learning (ICML 2020
影响因子:
--
作者:
Wang, D.;Xiao, H.;Devadas, S.;Xu, J.
通讯作者:
Xu, J.
影响因子:
6
作者:
Kume S;Nagasu H;Nangaku M;Nishiyama A;Nakamoto H;Kashihara N
通讯作者:
Kashihara N
影响因子:
--
作者:
Yatharth Dubey;A. Korolova
通讯作者:
Yatharth Dubey;A. Korolova
DOI:
10.1145/3406325.3451094
发表时间:
2021
期刊:
STOC 2021: Proceedings of the 53rd Annual ACM SIGACT Symposium on Theory of Computing
影响因子:
--
作者:
Leake, Jonathan;McSwiggen, Colin;Vishnoi, Nisheeth K.
通讯作者:
Vishnoi, Nisheeth K.