neuron-level mechanisms
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Understanding H-Neurons in LLMs
Read Full Article: Understanding H-Neurons in LLMs
Large language models (LLMs) often produce hallucinations, which are outputs that seem plausible but are factually incorrect, affecting their reliability. A detailed investigation into hallucination-associated neurons (H-Neurons) reveals that a very small fraction of neurons (less than 0.1%) can predict these occurrences reliably across various scenarios. These neurons are causally linked to behaviors of over-compliance and originate from pre-trained base models, maintaining their predictive power for hallucination detection. Understanding these neuron-level mechanisms can help in developing more reliable LLMs by bridging the gap between observable behaviors and underlying neural activity.
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