適応的線形パスモデルベース拡散
Adaptive Linear Path Model-Based Diffusion
拡散モデルとモデルベース制御を組み合わせ、線形確率パスでスケジューリングを簡素化し、強化学習で拡散ステップとノイズを適応的に調整する手法を提案。
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著者: Yutaka Shimizu, Masayoshi Tomizuka
分類: cs.RO
原文アブストラクト
The interest in combining model-based control approaches with diffusion models has been growing. Although we have seen many impressive robotic control results in difficult tasks, the performance of diffusion models is highly sensitive to the choice of scheduling parameters, making parameter tuning one of the most critical challenges. We introduce Linear Path Model-Based Diffusion (LP-MBD), which replaces the variance-preserving schedule with a flow-matching-inspired linear probability path. This yields a geometrically interpretable and decoupled parameterization that reduces tuning complexity and provides a stable foundation for adaptation. Building on this, we propose Adaptive LP-MBD (ALP-MBD), which leverages reinforcement learning to adjust diffusion steps and noise levels according to task complexity and environmental conditions. Across numerical studies, Brax benchmarks, and mobile-robot trajectory tracking, LP-MBD simplifies scheduling while maintaining strong performance, and ALP-MBD further improves robustness, adaptability, and real-time efficiency.
