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cs.LG2026
Do LLMs Really Forget? Hidden-State Leakage in Model Unlearning and How to Fix it
Hadi Reisizadeh, Jiajun Ruan, Sijia Liu +1
Unlearning in large language models (LLMs) is typically evaluated at the output level, where a model appears to suppress sensitive or undesirable content. In this work, we show tha…
cs.LG2025
Leak@: Unlearning Does Not Make LLMs Forget Under Probabilistic Decoding
Hadi Reisizadeh, Jiajun Ruan, Yiwei Chen +3
Unlearning in large language models (LLMs) is critical for regulatory compliance and for building ethical generative AI systems that avoid producing private, toxic, illegal, or cop…