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Zhuo-Fan Ying

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#machine learning Preprint Sep 2026

Tracing mechanisms of sycophantic agreement in language models

Sycophantic agreement in language models refers to the tendency to overly affirm a user's stated beliefs or preferences, often at the expense of factual accuracy. Although it is widely recognized as an alignment failure, its underlying mechanisms remain poorly understood. In this work, we use causal mediation analysis...

Si-Xing Chen, Zhuo-Fan Ying, L. Smith et al. · 0 citations

#machine learning Preprint Aug 2026

Sycophantic Agreement Transfers with Neutral Data via Contrastive Preference Optimization

The findings suggest that the teacher models used to generate preference data can interact with alignment training objectives in unexpected ways, generalizing to undesirable and potentially harmful behaviors like sycophantic agreement.

C. Blank, Zhuo-Fan Ying, Christopher Potts et al. · 0 citations