AR Forcing: 長期的ロボットナビゲーションのためのワールドモデルに向けて
AR Forcing: Towards Long-Horizon Robot Navigation World Model
拡散ベースのナビゲーションワールドモデルにおける訓練と推論の分布ずれを解消するため、自己回帰訓練戦略AR Forcingを提案し、長期的な予測の安定性と精度を向上させた。
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?
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著者: Yifei Yang, Zehua Fan, Huan Li, Aoqi Wang, Lida Huang, Haibao Yu, Haiyan Liu, Xuanyao Mao, Jason Bao, Liang Xu, Bingchuan Sun, Yan Wang
分類: cs.RO
原文アブストラクト
The diffusion based robot navigation world models are typically trained using parallel supervision, while autoregressive inference is employed during path planning. This results in a distribution shift between training and inference, which destabilizes the performance over long-horizon prediction. We propose AR Forcing, an autoregressive training strategy, which integrates the standard diffusion loss into the autoregressive training loop. At each step, the model uses its own predictions to update the context and optimize the single step noise prediction objective, thereby explicitly exposing the model to the inference state distribution during training. Our method does not require additional discriminators or distribution-matching losses, retains the original diffusion framework and sampler, and is easy to integrate. Experiments on multi-domain navigation datasets (RECON, SCAND, HuRoN, TartanDrive) show that compared with strong baselines, AR Forcing improved the consistency of generated images during long-horizon navigation and the accuracy of predicted trajectories, enhancing robustness of the model in complex known and unknown environments. We will release the code soon.
