SwitchVLA: 実行状態を考慮したタスク切り替えが可能な視覚-言語-行動モデル
SwitchVLA: Execution-Aware Task Switching for Vision-Language-Action Models
実行中に指示が変わっても柔軟に対応できるVLAフレームワークを提案し、外部プランナーや専用データなしで滑らかなタスク切り替えを実現した。
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: Meng Li, Zhen Zhao, Zhengping Che, Fei Liao, Kun Wu, Zhiyuan Xu, Pei Ren, Zhao Jin, Ning Liu, Jian Tang
分類: cs.RO
原文アブストラクト
Robots deployed in dynamic environments must be able to not only follow diverse language instructions but flexibly adapt when user intent changes mid-execution. While recent Vision-Language-Action (VLA) models have advanced multi-task learning and instruction following, they typically assume static task intent, failing to respond when new instructions arrive during ongoing execution. This limitation hinders natural and robust interaction in dynamic settings, such as retail or household environments, where real-time intent changes are common. We propose SwitchVLA, a unified, execution-aware framework that enables smooth and reactive task switching without external planners or additional switch-specific data. We model task switching as a behavior modulation problem conditioned on execution state and instruction context. Expert demonstrations are segmented into temporally grounded contact phases, allowing the policy to infer task progress and adjust its behavior accordingly. A multi-behavior conditional policy is then trained to generate flexible action chunks under varying behavior modes through conditioned trajectory modeling. Experiments in both simulation and real-world robotic manipulation demonstrate that SwitchVLA enables robust instruction adherence, fluid task switching, and strong generalization-outperforming prior VLA baselines in both task success rate and interaction naturalness.
