2 papers
stat.ML2026
Stabilizing Private LASSO under Heterogeneous Covariates via Anisotropic Objective Perturbation
Haruka Tanzawa, Ayaka Sakata
We study high-dimensional LASSO under differential privacy via objective perturbation with heterogeneous covariate scales. In practical scenarios, covariates often exhibit diverse…
stat.ML2026
Privacy-Accuracy Trade-offs in High-Dimensional LASSO under Perturbation Mechanisms
Ayaka Sakata, Haruka Tanzawa
We study privacy-preserving sparse linear regression in the high-dimensional regime, focusing on the LASSO estimator. We analyze two widely used mechanisms for differential privacy…