Tianyi Ma

activity

20242026

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stat.ML2026

Efficient and Minimax Optimal In-context Nonparametric Regression with Transformers

Michelle Ching, Ioana Popescu, Nico Smith +3

We study in-context learning for nonparametric regression with $α$ -Hölder smooth regression functions, for some $α > 0$ . We prove that, with $n$ in-context examples and $d$ -dimension…

stat.ML2025

Optimal In-context Adaptivity and Distributional Robustness of Transformers

Tianyi Ma, Tengyao Wang, Richard J. Samworth

We study in-context learning problems where a Transformer is pretrained on tasks drawn from a mixture distribution $π = \sum_{α \in A} λ_{α} π_{α}$ , called the pretraining prior,…