テスト時観測介入による再想像:視覚モデル予測制御のための妨害物に頑健な世界モデル予測
Reimagination with Test-time Observation Interventions: Distractor-Robust World Model Predictions for Visual Model Predictive Control
世界モデルが未知の視覚的妨害物に弱い問題に対し、テスト時に妨害物を検出・除去して予測を再想像し、事後的に妨害物を戻すことで、行動検証を頑健にする手法を提案。
詳しい要約
1. どんなもの?
2. 先行研究と比べてどこがすごい?
3. 技術・手法の肝は?
4. どうやって有効だと検証した?
5. 議論はある?
6. 次に読むべき論文は?
※ AIが要旨から生成した要約です。正確性は原文をご確認ください。
著者: Yuxin Chen, Jianglan Wei, Chenfeng Xu, Boyi Li, Masayoshi Tomizuka, Andrea Bajcsy, Ran Tian
分類: cs.RO, cs.AI, cs.CV
原文アブストラクト
World models enable robots to "imagine" future observations given current observations and planned actions, and have been increasingly adopted as generalized dynamics models to facilitate robot learning. Despite their promise, these models remain brittle when encountering novel visual distractors such as objects and background elements rarely seen during training. Specifically, novel distractors can corrupt action outcome predictions, causing downstream failures when robots rely on the world model imaginations for planning or action verification. In this work, we propose Reimagination with Observation Intervention (ReOI), a simple yet effective test-time strategy that enables world models to predict more reliable action outcomes in open-world scenarios where novel and unanticipated visual distractors are inevitable. Given the current robot observation, ReOI first detects visual distractors by identifying which elements of the scene degrade in physically implausible ways during world model prediction. Then, it modifies the current observation to remove these distractors and bring the observation closer to the training distribution. Finally, ReOI "reimagines" future outcomes with the modified observation and reintroduces the distractors post-hoc to preserve visual consistency for downstream planning and verification. We validate our approach on a suite of robotic manipulation tasks in the context of action verification, where the verifier needs to select desired action plans based on predictions from a world model. Our results show that ReOI is robust to both in-distribution and out-of-distribution visual distractors. Notably, it improves task success rates by up to 3x in the presence of novel distractors, significantly outperforming action verification that relies on world model predictions without imagination interventions.
関連論文
- テスト時モデルベース強化学習による世界モデルへの記憶の符号化モデルベース強化学習
- 再考:世界モデルにおける比較的想像を通じた探索と計画モデルベース強化学習
- アクションジェット:行動条件付きデータ多様体の局所形状の学習モデルベース強化学習
- 未モデル状態依存性下での学習クリティックによる最適制御モデルベース強化学習
- VIGOR: モデルベース強化学習における潜在空間一貫性によるゼロショット視覚汎化モデルベース強化学習
- 行動なし時系列からの動的埋め込みによる転移可能な方策学習モデルベース強化学習
