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Replay in Deep Learning: Current Approaches and Missing Biological Elements

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arxiv 2104.04132 v2 pith:G3EE4BLU submitted 2021-04-01 q-bio.NC cs.AIcs.LG

classification q-bio.NCcs.AIcs.LG
keywords replayneuraldeeplearningnetworksartificialbiologicalbeen
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Replay is the reactivation of one or more neural patterns, which are similar to the activation patterns experienced during past waking experiences. Replay was first observed in biological neural networks during sleep, and it is now thought to play a critical role in memory formation, retrieval, and consolidation. Replay-like mechanisms have been incorporated into deep artificial neural networks that learn over time to avoid catastrophic forgetting of previous knowledge. Replay algorithms have been successfully used in a wide range of deep learning methods within supervised, unsupervised, and reinforcement learning paradigms. In this paper, we provide the first comprehensive comparison between replay in the mammalian brain and replay in artificial neural networks. We identify multiple aspects of biological replay that are missing in deep learning systems and hypothesize how they could be utilized to improve artificial neural networks.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Consolidator: Learning Persistent Routed Memory Across Context Boundaries

    cs.LG 2026-08 conditional novelty 6.0 of 10

    A learned slot-local transform lets a frozen backbone update and retrieve a persistent memory after context reset, and using that memory to guide routing nearly doubles updated-mapping recall.

  2. Scalable Strategies for Continual Learning with Replay

    cs.LG 2025-05 conditional novelty 6.0 of 10

    A replay-based continual learning toolkit that combines low-rank adaptation, a post-task consolidation phase, and sequential weight merging to cut replay sample usage by up to 65% at matched accuracy.

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