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Aspects of human memory and Large Language Models
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Large Language Models (LLMs) are huge artificial neural networks which primarily serve to generate text, but also provide a very sophisticated probabilistic model of language use. Since generating a semantically consistent text requires a form of effective memory, we investigate the memory properties of LLMs and find surprising similarities with key characteristics of human memory. We argue that the human-like memory properties of the Large Language Model do not follow automatically from the LLM architecture but are rather learned from the statistics of the training textual data. These results strongly suggest that the biological features of human memory leave an imprint on the way that we structure our textual narratives.
Forward citations
Cited by 3 Pith papers
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Mixing Mechanisms: How Language Models Retrieve Bound Entities In-Context
In-context entity retrieval in LMs is a mixture of positional, lexical, and reflexive mechanisms; the pure positional view fails in middle positions of long lists.
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Memorization $\neq$ Understanding: Do Large Language Models Have the Ability of Scenario Cognition?
LLMs fine-tuned on paraphrases of fictional facts can recall the paraphrases but cannot answer questions about who did what in those facts, suggesting memorization without robust scenario-level understanding.
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Emergence of Episodic Memory in Transformers: Characterizing Changes in Temporal Structure of Attention Scores During Training
Attention heads in trained GPT-2 models develop temporal contiguity, recency, and primacy effects, and ablating induction heads removes the resulting serial-recall bias in outputs.
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