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

R4DSG introduces a relative 4D scene graph memory for long egocentric video, built on recent RGB-only advances in promptable video segmentation, temporal propagation, and relative 3D lifting, and produces a retrieval-ready memory directly usable for long-horizon question answering.

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

#artificial intelligence Preprint Sep 2026

MEMOBench: A Process Level Memory Benchmark for Robotic Manipulation

MEMOBench is presented, a benchmark for process level memory evaluation in robotic manipulation and provides a diagnostic evaluation suite and training supervision for memory grounded robotic policies.

Hai-Yang Sun, Hao-Xiao Wang, Jun-Ming Chen 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