I'm a Research Scientist in Robotics-AI at NVIDIA, working on post-training steering methods for online controllability of robot policies (diffusion, VLAs), along with VR-based teleoperation systems for data collection and policy evaluation.
Previously, I was a Postdoctoral Scholar at the Stanford Vision and Learning Lab, working with Silvio Savarese on deep reinforcement learning for robot social navigation and iGibson, a large-scale simulation platform for robot learning. I collaborated with Fei-Fei Li, Karen Liu, and Dorsa Sadigh, and co-instructed CS331B: Interactive Simulation for Robot Learning at Stanford.
I earned my PhD in Computer Science from MIT, advised by Julie Shah. There, I developed a next-generation teleoperation system based on learning from demonstrations, built MIT's Optimus robot, participated in the DARPA Robotics Challenge working with the Atlas robot, and led 100+ live robot demos.
My research has been featured in the NYT, Science Magazine, Wired, MIT News, and CNN, and has received funding from ONR and DARPA.
Verifying alignment between reasoning and actions in vision-language-action models.
Steering generative robot policies through human interactions at inference time.
Principles and guidelines for methods and benchmarking of social robot navigation.
Explicit-input assistance for robot teleoperation in cluttered environments.
Benchmarking teleoperation systems with expert operators (leader/follower teleop, teleautonomy interface, assisted planning, 2D, 3D perception).
Learning vision-based human-to-robot handovers from point clouds.
Retrospective on challenges and progress in embodied AI research.
Learning+Planning for social navigation in constrained layouts.
iGibson: a simulation environment for interactive tasks in large realistic scenes.
Learning diverse human-robot collaboration strategies via imitation.
PhD Thesis
Hybrid Learning for Multi-Step Manipulation in Collaborative Robotics.
Doctor of Philosophy, Computer Science. Massachusetts Institute of Technology, 2019
Learn geometric constraints from demonstrations for multistep manipulation tasks in shared autonomy.
Director: User interface for shared autonomy at DRC Finals.
Optimus as Theatrical Robot in Shared Autonomy
Prediction of the target of human reaching motion in real time.
MIT Team Approach to the DARPA Robotics Challenge.
Talk: Interactive Simulation for Robot Learning
February 2021
Invited talk at the MIT Embodied Intelligence Seminar presenting research on robot learning in simulation environments, including iGibson and social navigation.
Co-Instructor, Stanford University
Spring 2021
A research survey of advanced methods for robot learning in simulation, covering agent-environment interactions, imitation and reinforcement learning, sim2real techniques, and multi-agent/human-robot interaction domains. Project-based seminar leveraging iGibson simulation environment.
Earlier teaching (2010–2012): EC5811 Mechatronics, EC3514 Robotics, EC1421 Signals & Systems — Assistant Professor, Simón Bolívar University
Earlier advising (pre-2012): S. Martini, T. Chiesa, R. Rodríguez, D. Vigouroux — undergraduate thesis, Simón Bolívar University