4 papers
The Adverse Effects of Omitting Records in Differential Privacy: How Sampling and Suppression Degrade the Privacy--Utility Tradeoff (Long Version)
Àlex Miranda-Pascual, Javier Parra-Arnau, Thorsten Strufe
Sampling is renowned for its privacy amplification in differential privacy (DP), and is often assumed to improve the utility of a DP mechanism by allowing a noise reduction. In thi…
Balancing Privacy and Utility in Correlated Data: A Study of Bayesian Differential Privacy
Martin Lange, Patricia Guerra-Balboa, Javier Parra-Arnau +1
Privacy risks in differentially private (DP) systems increase significantly when data is correlated, as standard DP metrics often underestimate the resulting privacy leakage, leavi…
Adversarial Subspace Generation for Outlier Detection in High-Dimensional Data
Jose Cribeiro-Ramallo, Federico Matteucci, Paul Enciu +4
Outlier detection in high-dimensional tabular data is challenging since data is often distributed across multiple lower-dimensional subspaces -- a phenomenon known as the Multiple…
R+R:Understanding Hyperparameter Effects in DP-SGD
Felix Morsbach, Jan Reubold, Thorsten Strufe
Research on the effects of essential hyperparameters of DP-SGD lacks consensus, verification, and replication. Contradictory and anecdotal statements on their influence make matter…