Constant matters: Fine-grained error bound on differentially private continual observation

H Fichtenberger, M Henzinger… - … on Machine Learning, 2023 - proceedings.mlr.press
We study fine-grained error bounds for differentially private algorithms for counting under
continual observation. Our main insight is that the matrix mechanism when using lower …

Almost tight error bounds on differentially private continual counting

M Henzinger, J Upadhyay, S Upadhyay - … of the 2023 Annual ACM-SIAM …, 2023 - SIAM
The first large-scale deployment of private federated learning uses differentially private
counting in the continual release model as a subroutine (Google AI blog titled “Federated …

Differentially private graph learning via sensitivity-bounded personalized pagerank

A Epasto, V Mirrokni, B Perozzi… - Advances in Neural …, 2022 - proceedings.neurips.cc
Personalized PageRank (PPR) is a fundamental tool in unsupervised learning of graph
representations such as node ranking, labeling, and graph embedding. However, while data …

A unifying framework for differentially private sums under continual observation

M Henzinger, J Upadhyay, S Upadhyay - … of the 2024 Annual ACM-SIAM …, 2024 - SIAM
We study the problem of maintaining a differentially private decaying sum under continual
observation. We give a unifying framework and an efficient algorithm for this problem for any …

Continual observation under user-level differential privacy

W Dong, Q Luo, K Yi - 2023 IEEE Symposium on Security and …, 2023 - ieeexplore.ieee.org
In the foundational work of Dwork et al.[15] on continual observation under differential
privacy (DP), two privacy models have been proposed: event-level DP and user-level DP …

Constant matters: Fine-grained complexity of differentially private continual observation using completely bounded norms

M Henzinger, J Upadhyay - Cryptology ePrint Archive, 2022 - eprint.iacr.org
We study fine-grained error bounds for differentially private algorithms for averaging and
counting in the continual observation model. For this, we use the completely bounded …

Privacy-Preserving Graph Machine Learning from Data to Computation: A Survey

D Fu, W Bao, R Maciejewski, H Tong, J He - ACM SIGKDD Explorations …, 2023 - dl.acm.org
In graph machine learning, data collection, sharing, and analysis often involve multiple
parties, each of which may require varying levels of data security and privacy. To this end …

A framework for private matrix analysis in sliding window model

J Upadhyay, S Upadhyay - International Conference on …, 2021 - proceedings.mlr.press
We perform a rigorous study of private matrix analysis when only the last $ W $ updates to
matrices are considered useful for analysis. We show the existing framework in the non …

Optimal bounds on private graph approximation

J Liu, J Upadhyay, Z Zou - Proceedings of the 2024 Annual ACM-SIAM …, 2024 - SIAM
We propose an efficient ɛ-differentially private algorithm, that given a simple weighted n-
vertex, m-edge graph G with a maximum unweighted degree Δ (G)≤ n-1, outputs a synthetic …

Time-Aware Projections: Truly Node-Private Graph Statistics under Continual Observation

P Jain, A Smith, C Wagaman - arXiv preprint arXiv:2403.04630, 2024 - arxiv.org
We describe the first algorithms that satisfy the standard notion of node-differential privacy in
the continual release setting (ie, without an assumed promise on input streams). Previous …