Zheng Chen

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Publication activitypapers/week, last 8 weeks

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Constitutional AI & AI Ethics (1)RLHF & Preference Learning (1)

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Zhaoxin Feng (1)Y. Po (1)Yip Tin Po (1)Jianfei Ma (1)

Papers (1)

Aug 17, 2026

1w ago·also Affiliation:, HKUST

PCA-guided Activation Scaling for Monotonic Bidirectional Control over LLM Sycophancy

Achieving a 15.4% shift in LLM sycophancy control with a method that ensures predictable and gradual adjustments could redefine user interactions with AI.

Zheng Chen, Zhaoxin Feng, Y. Po +4

Constitutional AI & AI Ethics RLHF & Preference Learning

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Zheng Chen

Publication activitypapers/week, last 8 weeks

Research focus

Frequent co-authors

Papers (1)