Xavier Theimer‑Lienhard

Xavier Theimer‑Lienhard

Research Engineer at LiGHT, EPFL; Meditron Lead; incoming PhD student. Formerly visiting researcher at Yale University.

How do we make clinical LLMs more safe, more accurate and more transparent? How do we make sure clinical LLMs always provide the most up to date and relevant advice? How do we make LLMs more accessible to Health Workers in Low Resource settings?

News

Publications

Paper Figure
Fully Open Meditron: An Auditable Pipeline for Clinical LLMs
X. Theimer-Lienhard, M. El-Amin, F. Elhassan, S. Vaidya, V. Cartier-Negadi, D. Sasu, L. Klein, M.-A. Hartley
preprint
[PDF] The first fully open medical LLM.
Paper Figure
Llama-3-Meditron: An Open-Weight Suite of Medical LLMs Based on Llama-3.1
A. Sallinen, A.-J. Solergibert, M. Zhang, G. Boyé, M. Dupont-Roc, X. Theimer-Lienhard, E. Boisson, B. Bernath, H. Hadhri, A. Tran, T. Rabbani, T. Brokowski, Meditron Medical Doctor Working Group, T. G. J. Rudner, M.-A. Hartley
AAAI 2025 (GenAI4Health)
[PDF] Open weight medical LLM built on Llama 3.1.
Paper Figure
GPoeT: a Language Model Trained for Rhyme Generation on Synthetic Data
A. Popescu-Belis, À. R. Atrio, B. Bernath, E. Boisson, T. Ferrari, X. Theimer-Lienhard, G. Vernikos
ACL SIGHUM 2023 (LaTeCH-CLfL)
[PDF] Trained a GPT-2 poet that writes texts with rhymes.

Experience