Author

Xuan Feng

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Preprint Jul 2026

Where Detectors Fail: Closing the Tail-Domain Gap with Expert-Guided Mutual Distillation

This work proposes Expert-Guided Mutual Distillation (EGMD), which learns what evidence to trust across the prediction pipeline, and constructs Weibo_Balanced, a domain-balanced benchmark that isolates the effect of imbalance on generalization.

Xuan Feng, Guihong Liu, Tianlong Gu et al. · 0 citations

Preprint Aug 2026

PlanPO: Group Planning-Aware Policy Optimization for Multi-Turn Agentic LLMs

Group Planning-aware Policy Optimization (PlanPO) is proposed, a simple yet effective RL method for learning generalizable planning abilities beyond task-specific high-quality behavior patterns that enables agents to actively learn generalizable and deliberate behaviors spanning interaction planning and textual generation from high-quality rollouts, without degenerating into vanilla length minimization.

D. Liang, Liyuan He, Xuan Feng et al. · 0 citations