Research

Preprints

• Ching, M., Popescu, I., Smith, N., Ma, T., Underwood, W. G. and Samworth, R. J. (2026) Efficient and minimax-optimal in-context nonparametric regression with transformers. Preprint, arXiv:2601.15014.

• Ma, T., Wang, T. and Samworth, R. J. (2025) Provable test-time adaptivity and distributional robustness of in-context learning. Preprint, arXiv:2510.23254.
  (Student Paper Award, ASA Nonparametric Statistics Section, JSM 2026)

• Ma, T., Wang, T. and Samworth, R. J. (2025) Deep learning with missing data. Preprint, arXiv:2504.15388. [code]
  (Student Travel Award, ICSDS 2025)

Publications

• Ma, T., Verchand, K. A., Berrett, T. B., Wang, T. and Samworth, R. J. (2026+) Estimation beyond Missing (Completely) at Random. Annals of Statistics (to appear).
  (IMS Hannan Graduate Student Travel Award, 2025)

• Ma, T., Verchand, K. A., Samworth, R. J. (2026+) High-probability minimax lower bounds. Statistical Science (to appear).