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cs.AI2026
Unlocking Latent Personalization in LLMs
Wei Chen, Guanghui Zhu, Zhongliang Cai +1
Large language models (LLMs) are increasingly expected to adapt to individual users, yet effective personalization remains challenging when only limited user-specific samples are a…
cs.AI2026
S2T-RLHF: Hierarchical Credit Assignment for Stable Preference-Based RLHF
Wei Chen, Guanghui Zhu, Yafei Li +2
Reinforcement learning from human feedback (RLHF) with preference-based reward models often exhibits unstable training dynamics. A key contributing factor is that standard RLHF rel…