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Zhi-Yuan Fan

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#natural language process... Preprint Sep 2026

Before the Rollout Ends: Early Terminal Reward Prediction for Long-horizon Coding Agents

Long-horizon coding agents receive verifiable rewards only after completing expensive sequences of tool calls. This increases inference cost, amplifies early wrong hypotheses, and can lead to sparse terminal reward and unstable training. We introduce Contextual Early Reward (CER), which predicts terminal reward through...

Ji-Han Yao, Si-Han Zeng, Shang-Bin Feng et al. · 0 citations
#artificial intelligence Review Sep 2026

Environment Evolution for Terminal Agents

This paper proposes environment evolution, which incrementally increases environment difficulty off-policy and schedules the evolved environments generation by generation during training to provide continuous learning signals.

Zhi-Yuan Fan, Ting-Ting Yu, Yu-Tong Cai et al. · 2 citations
Preprint Aug 2026

Deep Research Pretraining via Predictive Navigation

Deep Research Pretraining (DRP), an offline framework that derives predictive navigation supervision from naturally occurring evidence structures, is introduced, an offline framework that derives predictive navigation supervision from naturally occurring evidence structures.

Jiang-Nan Zhou, Zhi-Yuan Fan, Xing Wu et al. · 2 citations

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