Sifei Liu

I am a Principal Research Scientist and Tech Lead at NVIDIA Research, where I work with the LPR team led by Jan Kautz. My current research focuses on embodied foundational models, efficient transformer architectures, and spatial reasoning.I am deeply involved in VLM and VLA foundation model efforts across Cosmos and Isaac GR00T.Before joining NVIDIA, I earned my Ph.D. at the VLLAB at UC Merced, advised by Ming-Hsuan Yang. I have been fortunate to receive the Baidu Graduate Fellowship, the NVIDIA Pioneering Research Award, and the Rising Star EECS recognition.