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math.ST2025
Nonparametric Bandits with Single-Index Rewards: Optimality and Adaptivity
Wanteng Ma, T. Tony Cai
Contextual bandits are a central framework for sequential decision-making, with applications ranging from recommendation systems to clinical trials. While nonparametric methods can…
math.ST2024
Statistical Inference in Tensor Completion: Optimal Uncertainty Quantification and Statistical-to-Computational Gaps
Wanteng Ma, Dong Xia
This paper presents a simple yet efficient method for statistical inference of tensor linear forms using incomplete and noisy observations. Under the Tucker low-rank tensor model a…