← Search

Stephen Hart

4 accepted papers

2026

When Life Gives You BC, Make Q-functions: Extracting Q-values from Behavior Cloning for On-Robot Reinforcement Learning

RSS 2026poster

Behavior Cloning (BC) has emerged as a highly effective paradigm for robot learning. However, BC lacks a self-guided mechanism for online improvement after demonstrations have been collected. Existing offline-to-online learning methods often cause policies to replace previously learned good actions …

Cited by 0Source ↗Scholar ↗
2024

Equivariant Diffusion Policy

CoRL 2024poster

Recent work has shown diffusion models are an effective approach to learning the multimodal distributions arising from demonstration data in behavior cloning. However, a drawback of this approach is the need to learn a denoising function, which is significantly more complex than learning an explicit…

Cited by 26Source ↗code ↗Scholar ↗
2022

Generalized Affordance Templates for Mobile Manipulation

ICRA 2022poster

This paper presents recent advances to the Affordance Template (AT) task description language. Affordance Templates provide standardized, easy-to-use tools for defining robot manipulation tasks that provide a high level of augmented reality capabilities to facilitate human-in-the-loop operation, but…

Cited by 14Source ↗Scholar ↗