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Memformer: A Memory-Augmented Transformer for Sequence Modeling

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arxiv 2010.06891 v2 pith:MFHKBUJC submitted 2020-10-14 cs.CL

classification cs.CL
keywords memorymemformermodelingsequenceback-propagationcomplexityencodeexternal
verification ladder T0 review T1 audit T2 compute T3 formal
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Transformers have reached remarkable success in sequence modeling. However, these models have efficiency issues as they need to store all the history token-level representations as memory. We present Memformer, an efficient neural network for sequence modeling, that utilizes an external dynamic memory to encode and retrieve past information. Our model achieves linear time complexity and constant memory space complexity when processing long sequences. We also propose a new optimization scheme, memory replay back-propagation (MRBP), which promotes long-range back-propagation through time with a significantly reduced memory requirement. Experimental results show that Memformer has achieved comparable performance compared to the baselines by using 8.1x less memory space and 3.2x faster on inference. Analysis of the attention pattern shows that our external memory slots can encode and retain important information through timesteps.

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Cited by 4 Pith papers

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

  1. Vision encoders should be image size agnostic and task driven

    cs.CV 2025-08 conditional novelty 6.0 of 10

    A position paper proposing task-driven, image-size-agnostic vision encoders, demonstrated by an iterative transformer with top-down multi-zoom patches and a GRPO-trained gaze policy on ImageNet.

  2. MemAgent: Reshaping Long-Context LLM with Multi-Conv RL-based Memory Agent

    cs.CL 2025-07 unverdicted novelty 6.0 of 10

    MemAgent uses multi-conversation RL to train a memory agent that reads text in segments and overwrites memory, extrapolating from 8K training to 3.5M token QA with under 5% loss and 95%+ on 512K RULER.

  3. Quantum-Enhanced Optimization by Warm Starts

    quant-ph 2025-08 unverdicted novelty 5.0 of 10

    Quantum-generated QAOA samples, used as warm starts for classical heuristics, yield faster Max-Cut and MIS solving, including on quantum hardware.

  4. Memory-Augmented Transformers: A Systematic Review from Neuroscience Principles to Enhanced Model Architectures

    cs.LG 2025-08 unverdicted novelty 3.0 of 10

    Memory-augmented Transformer research is organized into a three-axis taxonomy bridging neuroscience memory concepts to network designs, but no new result is produced.

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