Author

Kai-Long Fan

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Preprint Oct 2026

FisherEdit: Fisher Information Guided Knowledge Editing for Large Language Models

FisherEdit is proposed, a theoretically grounded method built on Fisher geometry, which replaces coarse activation-space projections with importance-aware regularization in parameter space and achieves state-of-the-art performance while better preserving model stability and downstream task accuracy.

Yi-Zhou Yang, Jia-Hong Fu, Zhi-Wu Wang et al. · 0 citations

#natural language process... Preprint Sep 2026

Rewarding Reasoning, Not Answers: Fixing and Bounding Test-Time Reinforcement Learning on Medical QA

It is shown that the minimum aggregation is essential: mean aggregation can be exploited, saturating the proxy reward while degrading accuracy, and the minimum aggregation is essential for PROSE, Process Reward Guided Self-Training.

Kai-Long Fan, An-Qi Pu, Yi-Chen Wu et al. · 0 citations