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Wei Chen

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#artificial intelligence Preprint Sep 2026

ParaAgent: Reinforcing Parallel Acting in Open-World Tool Environments

Language model agents are increasingly deployed in open-world tool environments, which require balancing exploring unknown capabilities and exploiting known ones. Existing methods face a performance-efficiency tradeoff: they either rigidly decouple exploration and execution or interleave them without coordination. We a...

Shengbin Yue, Hongru Wang, Siyuan Wang et al. · 0 citations
Preprint Aug 2026

RIDGE: Region-Informed Derivative-Guided Evidence Selection for Long Video Understanding

RIDGE, a frame selection framework that reads the frame-query similarity curve as a temporal signal, partitions the timeline into structural regions and applies region-specific selection to preserve event cores, transitions, buildup, aftermath, and contextual frames under a fixed budget.

Shan Xu, Meng-Xin Luo, Meng-Chen Qian et al. · 0 citations

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