Author

Hao Chen

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Preprint Aug 2026

R4DSG: Relative 4D Scene Graph Memory for Object-Centric Question Answering in Long Egocentric Video

Long-horizon egocentric video is a rich substrate for wearable AI assistants, but object-centric questions such as where an item was moved, when it last changed state, or why it was relocated remain difficult because caption- and transcript-based memories rarely preserve persistent object identity or structured spatial...

Ke Ma, Ya-Min Mao, Weiming Li et al. · 0 citations

#artificial intelligence Preprint Aug 2026

Spatial Memory Agent: Experience-Grounded Procedure Memory for Spatial Intelligence

SMA achieves the highest macro average in every base-model block and the best accuracy among the evaluated methods in most of the 20 evaluations, establishing a practical parameter-update-free path for spatial self-evolution across the evaluated frozen model scales and environments.

Haokai Zhang, Yuhang Ding, Yunshu Zhou et al. · 0 citations