Author

En-Xin Song

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Preprint Oct 2026

Video-Index: A Curated Meta-Benchmark for Video Understanding

A video benchmark should reward the capability it claims to measure, yet models can exploit answer options, question text, or partial visual evidence. We introduce the attack pyramid, five levels of shortcut attacks with increasing access to each item, and audit 115 video benchmarks with it. On 35 benchmarks, attackers...

En-Xin Song, Yi-Nuo Xu, Shu-Sheng Yang et al. · 0 citations

Preprint Sep 2026

HARMONY: Hierarchical Agentic Reasoning for MONocular Image-to-Scene Synthesis

Compositional 3D scene reconstruction has recently been explored from two directions: agentic reasoning that provides semantic understanding of spatial relationships but lacks precise alignment with input images; and visual geometry foundation models that predict dense point maps from input images but the reconstructio...

Shuoyao Sun, Chen Wang, En-Xin Song et al. · 1 citation