Selective Progress-Aware Querying for Human-in-the-Loop Reinforcement Learning

Fuente: arXiv
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Autores principales: Muraleedharan, Anujith, H, Anamika J
Formato: Preprint
Publicado: 2025
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author Muraleedharan, Anujith
H, Anamika J
author_facet Muraleedharan, Anujith
H, Anamika J
contents Human feedback can greatly accelerate robot learning, but in real-world settings, such feedback is costly and limited. Existing human-in-the-loop reinforcement learning (HiL-RL) methods often assume abundant feedback, limiting their practicality for physical robot deployment. In this work, we introduce SPARQ, a progress-aware query policy that requests feedback only when learning stagnates or worsens, thereby reducing unnecessary oracle calls. We evaluate SPARQ on a simulated UR5 cube-picking task in PyBullet, comparing against three baselines: no feedback, random querying, and always querying. Our experiments show that SPARQ achieves near-perfect task success, matching the performance of always querying while consuming about half the feedback budget. It also provides more stable and efficient learning than random querying, and significantly improves over training without feedback. These findings suggest that selective, progress-based query strategies can make HiL-RL more efficient and scalable for robots operating under realistic human effort constraints.
format Preprint
id arxiv_https___arxiv_org_abs_2509_20541
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Selective Progress-Aware Querying for Human-in-the-Loop Reinforcement Learning
Muraleedharan, Anujith
H, Anamika J
Robotics
I.2.9; I.2.6; I.2.8
Human feedback can greatly accelerate robot learning, but in real-world settings, such feedback is costly and limited. Existing human-in-the-loop reinforcement learning (HiL-RL) methods often assume abundant feedback, limiting their practicality for physical robot deployment. In this work, we introduce SPARQ, a progress-aware query policy that requests feedback only when learning stagnates or worsens, thereby reducing unnecessary oracle calls. We evaluate SPARQ on a simulated UR5 cube-picking task in PyBullet, comparing against three baselines: no feedback, random querying, and always querying. Our experiments show that SPARQ achieves near-perfect task success, matching the performance of always querying while consuming about half the feedback budget. It also provides more stable and efficient learning than random querying, and significantly improves over training without feedback. These findings suggest that selective, progress-based query strategies can make HiL-RL more efficient and scalable for robots operating under realistic human effort constraints.
title Selective Progress-Aware Querying for Human-in-the-Loop Reinforcement Learning
topic Robotics
I.2.9; I.2.6; I.2.8
url https://arxiv.org/abs/2509.20541