Hongjia (Alex) Huang

My name is 黄泓嘉 (Hongjia Huang / Wongka Wong), and I go by Alex. I am a master’s student in the MSR program at Carnegie Mellon’s Robotics Institute, working with Professor Zackory Erickson in the Robotic Caregiving and Human Interaction (RCHI) Lab. Previously, I earned my B.S. in Computer Science and Mathematics at NYU Shanghai, graduating summa cum laude. During my undergraduate studies, I worked with Professors Furong Huang, Tianyi Zhou, and Shengjie Wang.

I build physically grounded AI: models that learn how the world moves and behaves, from molecular interactions to robot manipulation. I explore how models can represent geometry, motion, and physical interactions to better predict what happens and how to act.

At CMU, I have worked on training vision-language-action models on Stretch. My previous research explored geometric representations of motion for 3D world modeling. I also worked on fine-tuning geometric (3D) world-action models and on physics-informed vision-language-action models, integrating 2D trajectories and 3D geometry into action prediction.

This interest in physical representations also extends to molecular force fields, where I worked on training models efficiently and exploring new representations of atomic environments.