← Search

Justin Lidard

4 accepted papers

2025

Diffusion Policy Policy Optimization

ICLR 2025poster

We introduce Diffusion Policy Policy Optimization, DPPO, an algorithmic framework including best practices for fine-tuning diffusion-based policies (e.g. Diffusion Policy) in continuous control and robot learning tasks using the policy gradient (PG) method from reinforcement learning (RL). PG method…

Cited by 270SourcePDFScholar
2025

Safety with Agency: Human-Centered Safety Filter with Application to AI-Assisted Motorsports

RSS 2025poster

Recent advances in safe autonomy open new opportunities in assisting humans in safety-critical and time-sensitive tasks such as motorsports. However, existing safe control algorithms predominantly focus on fully automated settings and often undermine key requirements in human–AI shared control domai…

Cited by 0PDFScholar
2024

Blending Data-Driven Priors in Dynamic Games

RSS 2024poster

As intelligent robots like autonomous vehicles become increasingly deployed in the presence of people, the extent to which these systems should leverage model-based game-theoretic planners versus data-driven policies for safe, interaction-aware motion planning remains an open question. Existing dyna…

2024

Risk-Calibrated Human-Robot Interaction via Set-Valued Intent Prediction

RSS 2024poster

Tasks where robots must anticipate human intent, such as navigating around a cluttered home or sorting everyday items, are challenging because they exhibit a wide range of valid actions that lead to similar outcomes. Moreover, zero-shot cooperation between human-robot partners is an especially chall…

Cited by 6SourcePDFScholar