CometVLA: 身体性データピラミッドの共学習による物理理解の獲得
CometVLA: Co-Training on an Embodied Data Pyramid towards Physical Understanding
ロボット操作タスクにおける物理常識の欠如を補うため、身体性に整合した物理VQAデータとベンチマークを構築し、VLAモデルを共学習させる手法を提案。実世界とシミュレーションで性能向上を確認した。
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?
※ 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: Hanwen Wan, Dafeng Chi, Linbo Zhai, Tianao Shen, Yuzheng Zhuang, Tianle Zhang, Peidong Liu, Liang Lin, Xiaoqiang Ji
分類: cs.RO
原文アブストラクト
Vision-language-action (VLA) models remain brittle in manipulation tasks that require physical commonsense. Current physical VQA data is typically disembodied and misaligned with robot action domains. Egocentric videos are used only as auxiliary pre-training. It remains unclear whether improved VLM physical understanding actually benefits downstream action generation. Therefore, we present CometVLA to close this gap. We construct CometData and CometBench, an embodied physical VQA corpus and benchmark strictly aligned with the robot's action data and embodiment. We introduce Global Action Prior (GAP) tokens, a compact learnable bottleneck that isolates task-agnostic motion regularities and lets the action head consume physical commonsense without corrupting the pre-trained VLM backbone. We co-train CometVLA across the embodied data pyramid, spanning teleoperation, simulation, egocentric trajectories, and VQA layers. On real-world manipulation tasks and RoboTwin simulation, CometVLA consistently outperforms strong VLA baselines. Correlation analysis shows that stronger VLM performance on CometBench indicates higher VLA success rates. Results demonstrate that physical understanding pre-training genuinely benefits downstream manipulation.