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Author

Sheng Zhang

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#machine learning Preprint Oct 2026

Failure Recovery via Belief Updates and World Modeling for Long-Horizon Agents

Long-horizon agents often struggle to recover from failures whose causes lie several steps earlier, beyond what local reflection or backtracking can resolve. We introduce BELIEFWEAVER, a framework that combines persistent evidence across attempts with prospective reasoning over repair directions. It maintains a relatio...

Xi-Yang Wu, Zhi-Chao Liu, Sheng Zhang et al. · 0 citations
Preprint Sep 2026

ASSEMBLE: Atomic Skills for Evidence-Grounded Video Reasoning

Complex video reasoning often depends on evidence scattered across distant moments, entities, and events, yet a correct answer alone does not reveal whether a model relied on the right parts of the video. We introduce ASSEMBLE, a framework that makes supporting evidence explicit throughout long-video reasoning. ASSEMBL...

Xi-Yang Wu, Zong-Xia Li, Sheng Zhang et al. · 0 citations
Preprint Aug 2026

Recursive Agentic Reasoning

Analysis shows that BRANCH's advantage arises not only from exploring multiple reasoning paths, but also from recovering from truncation: its gains strongly correlate with the baseline rate of empty, budget-exhausted outputs, weakening the hypothesis that different problems require routing among test-time reasoning ope...

Sheng Zhang, Xiao-Min Wu, Xi-Yang Wu et al. · 0 citations

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