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[ICCV2025 highlight]Rectifying Magnitude Neglect in Linear Attention

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# [ICCV2025 highlight]Rectifying Magnitude Neglect in Linear Attention

### Arxiv
[Rectifying Magnitude Neglect in Linear Attention](https://arxiv.org/abs/2507.00698)

### Abstract
As the core operator of Transformers, Softmax Attention exhibits excellent global modeling capabilities. However, its quadratic complexity limits its applicability to vision tasks. In contrast, Linear Attention shares a similar formulation with Softmax Attention while achieving linear complexity, enabling efficient global information modeling. Nevertheless, Linear Attention suffers from a significant performance degradation compared to standard Softmax Attention. In this paper, we analyze the underlying causes of this issue based on the formulation of Linear Attention. We find that, unlike Softmax Attention, Linear Attention entirely disregards the magnitude information of the Query(Q or ϕ(Q)). This prevents the attention score distribution from dynamically adapting as the Query scales. As a result, despite its structural similarity to Softmax Attention, Linear Attention exhibits a significantly different attention score distribution. Based on this observation, we propose Magnitude-Aware Linear Attention (MALA), which modifies the computation of Linear Attention to fully incorporate the Query’s magnitude. This adjustment allows MALA to generate an attention score distribution that closely resembles Softmax Attention while exhibiting a more well-balanced structure. We evaluate the effectiveness of MALA on multiple tasks, including image classification, object detection, instance segmentation, semantic segmentation, natural language processing, speech recognition, and image generation. Our MALA achieves strong results on all of these tasks.

### Cite
```bibtex
@inproceedings{fan2024rect,
      title={Rectifying Magnitude Neglect in Linear Attention},
      author={Qihang Fan and Huaibo Huang and Yuang Ai and Ran He },
      year={2025},
      booktitle={ICCV},
}
```

### Models

[All models here](https://huggingface.co/aldjalkdf/MAViT/tree/main)

MALA

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