How LLMs store facts: three learning phases, attention circuits, and hallucinations
scott_linderman · x · 2026-10-21
Nicolas Zucchet highlights a memory-centric view of LLMs and shares related research (arXiv:2503.21676): models learn facts in three phases with an attention-circuit plateau, imbalanced data distributions shorten plateaus, and hallucinations emerge alongside knowledge — fine-tuning new facts readily corrupts parametric memory, pointing to data-scheduling strategies as a lever.
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