Author

Yuxiang Cui

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Preprint Sep 2026

Revisiting Topological Graphs for Macro Action based Closed-loop Reinforcement Learning of Vision Language Navigation in Continuous Environment

This work reformulates VLN-CE as a Hierarchical Markov Decision Process (MDP), explicitly decoupling high-level planning from low-level control, and proposes an action-aware value head to effectively evaluate state values under the dynamic frontier action space, powering a graph-based PPO.

Shu-Hao Ye, Si-Tong Mao, Yu-Xiang Cui et al. · 0 citations

Preprint Aug 2026

Embodied-Navigator: Point, Think, Memorize, and Align for Efficient Navigation

This work proposes TAMP-Nav, a unified framework for efficient embodied navigation that dynamically triggers Chain-of-Thought and retains high-fidelity memory only at critical nodes, compressing redundant trajectories into lightweight Space-Time Indicators, thereby preserving critical historical information and enhanci...

Hongyan Feng, Sun-Lai Chen, Xuan-Yu Liu et al. · 1 citation