WorldVLN: 空中視覚言語ナビゲーションのための自己回帰的世界行動モデル
WorldVLN: Autoregressive World Action Model for Aerial Vision-Language Navigation
空中VLNを予測駆動の世界行動問題として捉え、自己回帰ビデオバックボーンで世界状態遷移を予測し、実行可能なウェイポイント行動に直接デコードする初のモデルWorldVLNを提案。2段階訓練と強化学習により、ベンチマークで12%以上の成功率向上を達成し、実ドローンへのゼロショット転送も実証。
詳しい要約
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2. 先行研究と比べてどこがすごい？
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著者: Baining Zhao, Jiacheng Xu, Weicheng Feng, Xin Zhang, Zhaolu Wang, Haoyang Wang, Shilong Ji, Ziyou Wang, Jianjie Fang, Zhiheng Zheng, Weichen Zhang, Yu Shang, Wei Wu, Chen Gao, Xinlei Chen, Yong Li
分類: cs.RO, cs.CV
原文アブストラクト
Aerial vision-language navigation (VLN) requires agents to follow natural-language instructions through closed-loop perception and action in 3D environments. We argue that aerial VLN can be formulated as a prediction-driven world-action problem: the agent should anticipate latent world evolution and act according to the predicted consequences. To this end, we propose WorldVLN, the first autoregressive world action model for aerial VLN. Unlike full-sequence video-generation world models that generate an entire visual clip, WorldVLN adapts a latent autoregressive video backbone to predict short-horizon world-state transitions and directly decodes them into executable waypoint actions. After each action segment is executed, newly received observations are encoded back into the autoregressive context, enabling closed-loop world-action prediction. We further introduce a two-stage training framework that first grounds the video prior in instruction-conditioned navigation dynamics and then develops Action-aware GRPO, the first reinforcement learning method tailored to autoregressive WAMs, to optimize waypoint decisions through their downstream rollout consequences. On public outdoor and indoor benchmarks, WorldVLN consistently outperforms existing Vision-Language-Action baselines with 12\%+ success-rate gains and larger advantages on challenging cases. It further transfers zero-shot to real drone deployment, suggesting that the proposed WorldVLN offers a promising route for spatial action tasks. Demos and code are available at https://embodiedcity.github.io/WorldVLN/.
