EM-LLM: A Novel and Flexible Architecture that Integrates Key Aspects of Human Episodic Memory and Event Cognition into Transformer-based Language Models

EM-LLM: A Novel and Flexible Architecture that Integrates Key Aspects of Human Episodic Memory and Event Cognition into Transformer-based Language Models

Practical Solutions and Value

Extending Language Models’ Context Windows

Large language models (LLMs) face limitations in processing extensive contexts due to their Transformer-based architectures. These constraints hinder their ability to incorporate domain-specific, private, or up-to-date information effectively.

Improving Long-Context Tasks

Researchers have explored various approaches to extend LLMs’ context windows, focusing on improving softmax attention, reducing computational costs, and enhancing positional encodings. Retrieval-based methods, particularly group-based k-NN retrieval, have shown promise by retrieving large token groups and functioning as hierarchical attention.

Integration of Episodic Memory into LLMs

EM-LLM is a unique architecture that integrates episodic memory into Transformer-based LLMs, enabling them to handle significantly longer contexts. This approach mimics human episodic memory, enhancing the model’s ability to process extended contexts and perform complex temporal reasoning tasks efficiently.

Performance Improvement

EM-LLM demonstrated improved performance on long-context tasks compared to the baseline InfLLM model. It showed significant gains on tasks such as PassageRetrieval and HotpotQA, highlighting its enhanced ability to recall detailed information from large contexts and perform complex reasoning over multiple supporting documents.

Revolutionizing LLM Interactions

EM-LLM offers a path towards virtually infinite context windows, potentially revolutionizing LLM interactions with continuous, personalized exchanges. This flexible framework serves as an alternative to traditional techniques and provides a scalable computational model for testing human memory hypotheses.

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