並列シミュレーションにおけるロボットマニピュレーションのための視覚言語報酬学習のスケーリング
Scaling Vision-Language Reward Learning for Robot Manipulation in Parallel Simulation
GPU並列ロールアウトと単一リクエスト選好ラベリングを組み合わせたRAPIDを提案し、Franka Pandaの5タスクで訓練時間を8倍短縮、API呼び出しを95.5%削減しつつ成功率を98.7%に向上させた。
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著者: Lobna Joualy, Eric Demeester, Nikolaos Tsiogkas
分類: cs.RO
原文アブストラクト
Vision-language models (VLMs) can replace human annotators in preference-based reward learning, but sequential API requests and single-environment data collection make training slow and costly. We present RAPID (Reward learning with Adaptive Parallel Image Diversity), a system that couples GPU-parallel rollout with data-aware policy updates, single-request preference labeling, automatic reward stabilization, and representative image sampling. We evaluate these components on five Franka Panda manipulation tasks in IsaacLab. Parallel rollout and adaptive updates provide the first substantial reduction in training time: under matched two-stage prompting, mean runtime falls from 9.18 to 3.13 hours. With all RAPID components enabled, training completes in 1.15 hours using 896 rather than 19,840 API calls per run, and aggregate final success rises from 86.3\% to 98.7\%. This represents an 8.0$\times$ end-to-end speedup and a 95.5\% reduction in API usage. An offline evaluation with Gemma~3 12B and GPT-4.1 mini demonstrates that single-request prompting reduces labeling latency and cost across both models. Code is available at: https://github.com/rapid-vlm/rapid-vlm-rl.