Author

Zhang-Cong Xu

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#artificial intelligence Preprint Sep 2026

Linguistic Trajectory Encoding for Efficient Long-Horizon Spatial Memory in Embodied Agents

Linguistic Trajectory Encoding (LTE) is introduced, which compresses dynamic object motion histories via a hybrid representation combining natural language descriptions, sparse spatial anchors, and visual anchors, and adapts compression to motion complexity by anchoring periods without reliable observations to the last...

Tianyidan Xie, Shen-Yi Wang, Qiang Tang et al. · 0 citations

Preprint Aug 2026

EgoMonth: A Month-Level Egocentric Video Benchmark for Long-Term Spatiotemporal Memory

Evaluation of state-of-the-art open-source and closed-source MLLMs reveals that current MLLMs function as lossy summarizers rather than faithful memorizers, highlighting the need for architectures with genuine long-term spatiotemporal memory.

Weitao Chen, Jiaxing Hu, Xie Tianyidan et al. · 2 citations · ⚡1