Reward Generation via Large Vision-Language Model in Offline Reinforcement Learning

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Hauptverfasser: Lee, Younghwan, Luu, Tung M., Lee, Donghoon, Yoo, Chang D.
Format: Preprint
Veröffentlicht: 2025
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author Lee, Younghwan
Luu, Tung M.
Lee, Donghoon
Yoo, Chang D.
author_facet Lee, Younghwan
Luu, Tung M.
Lee, Donghoon
Yoo, Chang D.
contents In offline reinforcement learning (RL), learning from fixed datasets presents a promising solution for domains where real-time interaction with the environment is expensive or risky. However, designing dense reward signals for offline dataset requires significant human effort and domain expertise. Reinforcement learning with human feedback (RLHF) has emerged as an alternative, but it remains costly due to the human-in-the-loop process, prompting interest in automated reward generation models. To address this, we propose Reward Generation via Large Vision-Language Models (RG-VLM), which leverages the reasoning capabilities of LVLMs to generate rewards from offline data without human involvement. RG-VLM improves generalization in long-horizon tasks and can be seamlessly integrated with the sparse reward signals to enhance task performance, demonstrating its potential as an auxiliary reward signal.
format Preprint
id arxiv_https___arxiv_org_abs_2504_08772
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Reward Generation via Large Vision-Language Model in Offline Reinforcement Learning
Lee, Younghwan
Luu, Tung M.
Lee, Donghoon
Yoo, Chang D.
Machine Learning
Artificial Intelligence
In offline reinforcement learning (RL), learning from fixed datasets presents a promising solution for domains where real-time interaction with the environment is expensive or risky. However, designing dense reward signals for offline dataset requires significant human effort and domain expertise. Reinforcement learning with human feedback (RLHF) has emerged as an alternative, but it remains costly due to the human-in-the-loop process, prompting interest in automated reward generation models. To address this, we propose Reward Generation via Large Vision-Language Models (RG-VLM), which leverages the reasoning capabilities of LVLMs to generate rewards from offline data without human involvement. RG-VLM improves generalization in long-horizon tasks and can be seamlessly integrated with the sparse reward signals to enhance task performance, demonstrating its potential as an auxiliary reward signal.
title Reward Generation via Large Vision-Language Model in Offline Reinforcement Learning
topic Machine Learning
Artificial Intelligence
url https://arxiv.org/abs/2504.08772