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Meng-Nan Du

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#natural language process... Preprint Sep 2026

Faithful Activation Verbalization: Reducing Hallucinations in LLM Representation Interpretation

Activation verbalization methods such as Activation Oracle and Natural Language Autoencoders decode hidden representations of large language models into human-readable natural language. However, existing methods can produce incomplete or hallucinated descriptions, making their activation verbalizations difficult to tru...

Hai-Yan Zhao, Zi-Rui Hei, Wei Shi et al. · 0 citations
#machine learning Preprint Sep 2026

RewardExplainer: Learning Reward Model Explanations from Counterfactual Preference Feedback

Reward models (RMs) are a key component of large language model post-training, providing reward signals for subsequent reinforcement learning. However, conventional discriminative RMs typically output only scalar scores, making it difficult to identify the response behaviors associated with their scoring decisions. Exi...

Jing-Yi He, Ni-Er Wu, Shuang Liu et al. · 0 citations

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