2 papers
cs.LG2026
Reinforcement Learning from Human Feedback
Nathan Lambert
Reinforcement learning from human feedback (RLHF) has become a crucial tool to build the latest machine learning systems at scale. The field grew around the core methods of RLHF in…
cs.CL2025
Open Character Training: Shaping the Persona of AI Assistants through Constitutional AI
Sharan Maiya, Henning Bartsch, Nathan Lambert +1
The character of the "AI assistant" persona generated by modern chatbot large language models influences both surface-level behavior and apparent values, beliefs, and ethics. These…