Author

Xi Chen

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#artificial intelligence May 2026

Learning Spatiotemporal Sensitivity in Video LLMs via Counterfactual Reinforcement Learning

This work proposes Counterfactual Relational Policy Optimization (CRPO), which explicitly trains Video LLMs to respond to controlled changes in the visual input, and introduces DyBench, a paired counterfactual benchmark with 3{,}014 videos and a strict pair-accuracy metric.

Da-Zhao Du, Jian Liu, Jia-Long Qin et al. · arXiv.org · 1 citation

Preprint Aug 2026

Temporally Grounded Compositional Camera Motion Understanding via Geometric Knowledge Distillation

This work introduces CamChoreo, a benchmark of 4,229 real single-shot clips with expert-annotated temporal segments, and proposes CamDistill, which distills the same geometric knowledge into lightweight camera tokens during training and removes the 3D model at inference.

Da-Zhao Du, Shiyan Du, Jian Liu et al. · 0 citations

Review Aug 2026

Context Is Not Authority: Structured Runtime Governance for Financial Market Agents

SAGE-Fin is presented, a finance-specific authority-handoff contract that makes the proposed effect, not merely its text, the object of runtime control, and its results establish executable conformance, not independent safety accuracy.

Rui Tang, Qiang Liu, Yi-Chi Zhang et al. · 1 citation