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arXiv 2602.22644cs.CV
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插件、即插即用并加固:一种低成本模块用于鲁棒多模态图像理解模型

Plug, Play, and Fortify: A Low-Cost Module for Robust Multimodal Image Understanding Models

National University of Defense Technology(国防科技大学)

Siqi Lu, Wanying Xu, Yongbin Zheng, Wenting Luan, Peng Sun, Jianhang Yao

AI总结:

本文提出了一种低成本模块,通过频域分析解决多模态模型中缺失模态导致的性能问题,提升模型鲁棒性和整体学习效果。

摘要:

缺失的模态在多模态模型中是一个根本性挑战,常常导致灾难性的性能下降。我们的观察表明,这种脆弱性源于不平衡的学习过程,模型会形成对某些模态的隐含偏好,导致其他模态的欠优化。我们提出了一种简单而高效的解决方法。本工作的核心见解是,模态之间的主导关系可以在频域中有效辨识和量化。为了利用这一原理,我们首先引入了一个频率比率度量(FRM),通过分析频域中的特征来量化模态偏好。在FRM的指导下,我们提出了一种多模态权重分配模块,这是一个即插即用的组件,可以在训练过程中动态重新平衡每个分支的贡献,促进更全面的学习范式。广泛的实验表明,MWAM可以无缝集成到不同的架构主干中,如基于CNN和ViT的架构。此外,MWAM在广泛的任务和模态组合中均能提供一致的性能提升。这一进展不仅限于优化基础模型的性能,还进一步提升了处理缺失模态问题的最先进方法的性能。

英文摘要:

Missing modalities present a fundamental challenge in multimodal models, often causing catastrophic performance degradation. Our observations suggest that this fragility stems from an imbalanced learning process, where the model develops an implicit preference for certain modalities, leading to the under-optimization of others. We propose a simple yet efficient method to address this challenge. The central insight of our work is that the dominance relationship between modalities can be effectively discerned and quantified in the frequency domain. To leverage this principle, we first introduce a Frequency Ratio Metric (FRM) to quantify modality preference by analyzing features in the frequency domain. Guided by FRM, we then propose a Multimodal Weight Allocation Module, a plug-and-play component that dynamically re-balances the contribution of each branch during training, promoting a more holistic learning paradigm. Extensive experiments demonstrate that MWAM can be seamlessly integrated into diverse architectural backbones, such as those based on CNNs and ViTs. Furthermore, MWAM delivers consistent performance gains across a wide range of tasks and modality combinations. This advancement extends beyond merely optimizing the performance of the base model; it also manifests as further performance improvements to state-of-the-art methods addressing the missing modality problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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