Author

Zhiquan Hu

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Jul 2026

EviBack: Search-Agent Reinforcement Learning via Evidence-Constrained Teacher Backoff

EviBack is presented, an evidence- constrained Teacher backoff that supplies auxiliary super- vision to such groups while preserving verifiable Actor re- wards, and separates evidence assessment from answer refine- ment, preventing reference answers from overriding evidence- insufficiency judgments.

Xiao Ma, Zhiquan Hu, Yi Wei et al. · arXiv.org · 0 citations

#natural language process... Preprint Aug 2026

JPO: Juris Policy Optimization for Structured Legal Reasoning in Criminal Judgment Prediction

Juris Policy Optimization (JPO), a post-training framework for structured legal reasoning in Chinese criminal judgment prediction, is proposed and experiments show that JPO consistently improves both judgment prediction and reasoning quality over supervised fine-tuning and reinforcement learning baselines.

Zhao-Lu Kang, Yan-Tao Liu, Tailong Luo et al. · 1 citation