NavProbe: 能動的記憶検索による証拠に基づく推論を用いたゼロショットナビゲーション
NavProbe: Evidence-Grounded Reasoning with Active Memory Retrieval for Zero-Shot Navigation
訪問場所や遷移の要約をインデックス化し、必要時に視覚・幾何情報を能動的に検索してサブゴールを修正する階層型ゼロショットナビゲーション手法を提案し、R2R-CEやRxR-CEで高い性能を示した。
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: Jingyang Liu, Sujia Yao, Jiayuan Gu, Lan Xu
分類: cs.RO
原文アブストラクト
Long-horizon navigation requires an agent to revise its intermediate objectives as evidence accumulates. Full visual histories are costly to process, while compact summaries may omit details needed to reconsider earlier decisions. We introduce NavProbe, a hierarchical zero-shot navigation agent that couples a dynamic subgoal agenda with active evidence retrieval. A compact index links summaries of visited places, transitions, and landmarks to their visual and geometric records. When the current context is insufficient, a task executive retrieves targeted evidence to generate, revise, or resolve subgoals. Reusable conclusions are used to update the index, and a skill policy converts the revised task state into parameterized navigation actions. NavProbe achieves 71.7% SR and 55.8% SPL on R2R-CE and 55.3% SR and 38.6% SPL on RxR-CE, outperforming strong zero-shot baselines. It also achieves 79.3% SR on HM3D-v2 ObjectNav, with qualitative real-robot demonstrations illustrating physical deployment.