Portrait of Elham Daneshmand

Elham Daneshmand

PhD - McGill University
Supervisor
Hsiu-Chin Lin
Co-supervisor
Glen Berseth
Research Topics
Reinforcement Learning

Publications

SLowRL: Safe Low-Rank Adaptation Reinforcement Learning for Locomotion
Elham Daneshmand
Shafeef Omar
Glen Berseth
Majid Khadiv
Hsiu-Chin Lin
Sim-to-real transfer of locomotion policies often leads to performance degradation due to the inevitable sim-to-real gap. Naively fine-tunin… (see more)g these policies directly on hardware is problematic, as it poses risks of mechanical failure and suffers from high sample inefficiency. In this paper, we address the challenge of safely and efficiently fine-tuning reinforcement learning (RL) policies for dynamic locomotion tasks. Specifically, we focus on fine-tuning policies learned in simulation directly on hardware, while explicitly enforcing safety constraints. In doing so, we introduce SLowRL, a framework that combines Low-Rank Adaptation (LoRA) with training-time safety enforcement via a recovery policy. We evaluate our method both in simulation and on a real Unitree Go2 quadruped robot for jump and trot tasks. Experimental results show that our method achieves a
2026-03-16
arXiv (preprint)
doi.org
arxiv.org