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stat.ML2026
Provably Data-driven Multiple Hyper-parameter Tuning with Structured Loss Function
Tung Quoc Le, Anh Tuan Nguyen, Viet Anh Nguyen
Data-driven algorithm design automates hyperparameter tuning, but its statistical foundations remain limited because model performance can depend on hyperparameters in implicit and…
stat.ML2025
SCOPE: Spectral Concentration by Distributionally Robust Joint Covariance-Precision Estimation
Renjie Chen, Viet Anh Nguyen, Huifu Xu
We propose a distributionally robust formulation for simultaneously estimating the covariance matrix and the precision matrix of a random vector.The proposed model minimizes the wo…