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Feng-Yu Xie

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Preprint Aug 2026

Data-Efficient Adaptation of DPA-4 Force Fields to DFT+U Energetics: A Case Study in NiO

The results show that incorrect source-level phase energetics can be reversed through target-level fine-tuning, and suggest a practical multi-fidelity strategy in which pretraining prioritizes broad, consistent, and affordable data, while compact target-level datasets impose energetics through application-specific fine...

Feng-Yu Xie, Pei-Heng Jiang, Zhi-Cheng Zhong · 0 citations
#natural language process... Preprint Aug 2026

Small Language Models as Judges for Rubric-Based Reinforcement Learning

This work studies whether smaller language models can serve as efficient and reliable rubric-based judges, and compares three ways of extracting criterion-level judgments from small models: Generative verdicts, Yes/No Logprob margins, and Probe judges.

Feng-Yu Xie, Yilun Zhao, Bingsen Chen et al. · 0 citations

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