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Chen Zhao

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#artificial intelligence Preprint Sep 2026

Making LLMs Say What They Think: Measuring and Improving CoT-Interpretability Alignment

Chain-of-thought (CoT) traces often serve as a proxy for how Large Language Models (LLMs) arrive at their answers. However, growing evidence shows that models'CoT often fails to reflect their internal computations and can be changed without affecting their final answers. In this work, we measure and improve the alignme...

Yi-Huai Hong, Shauli Ravfogel, Chen Zhao et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Memory Is a Derivation: The Distributed-Evidence Paradox in Long-Term Agents

DerivAudit is introduced, a framework for auditing whether a memory is actually supported by the history available when it was written, whether supporting evidence lies beyond writer-provided citations, whether the composed memory introduces unsupported meaning, and how write-time admission decisions affect later memor...

Hong-Jun Liu, Chen Zhao · 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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