Dr. Xu Guo is a Research Scientist at the LILY Research Center, Nanyang Technological University (NTU), Singapore. Her research develops efficient and trustworthy human-AI systems for health and social impact, integrating generative AI and synthetic data, reliable and efficient LLM reasoning, and affective human-centered AI.

From 2023 to 2026, Xu held the prestigious Wallenberg-NTU Presidential Postdoctoral Fellowship, working on AI for healthy aging (with Prof. Chunyan Miao). In 2025, she was a researcher at the Department of Information Science and Engineering, KTH Royal Institute of Technology, Sweden, working on information-theoretic approaches for understanding LLM reasoning (with Prof. Mikael Skoglund). Xu received her Ph.D. from NTU in June 2023 under the supervision of Prof. Han Yu, focusing on data-efficient algorithms for domain adaptation.