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Wannan Yang

2 accepted papers

2026

Hallucination Reduction with CASAL: Contrastive Activation Steering for Amortized Learning

ICLR 2026poster

Large Language Models (LLMs) exhibit impressive capabilities but often hallucinate, confidently providing incorrect answers instead of admitting ignorance. Prior work has shown that models encode linear representations of their own knowledge and that activation steering can reduce hallucinations. Th…

Cited by 0SourceScholar
2023

Contrastive Retrospection: honing in on critical steps for rapid learning and generalization in RL

NeurIPS 2023poster

In real life, success is often contingent upon multiple critical steps that are distant in time from each other and from the final reward. These critical steps are challenging to identify with traditional reinforcement learning (RL) methods that rely on the Bellman equation for credit assignment. He…