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arXiv 2508.08069cs.CV

基于信息瓶颈因果注意力的多标签医学图像识别

Information Bottleneck-based Causal Attention for Multi-label Medical Image Recognition

Joint SDU-NTU Centre for Artificial Intelligence Research (C-FAIR)(联合山东大学-东北大学人工智能研究中心(C-FAIR));Shandong University(山东大学);School of Information Science and Engineering(信息科学与工程学院);Child Care Hospital Affiliated to Shandong First Medical University(山东第一医科大学附属儿童医院);Case Western Reserve University(凯斯西储大学)

Xiaoxiao Cui, Yiran Li, Kai He, Shanzhi Jiang, Mengli Xue, Wentao Li, Junhong Leng, Zhi Liu, Lizhen Cui, Shuo Li

AI总结:

本文提出一种新的结构因果模型和基于信息瓶颈的因果注意力(IBCA)方法,通过学习高斯混合多标签空间注意力并利用对比增强的因果干预,有效过滤类无关信息并减轻虚假注意力,在多标签医学图像识别中显著提升了诊断准确率与可解释性。

摘要:

医学图像的多标签分类(MLC)旨在识别多种疾病,具有重要的临床潜力。关键的一步是有效学习类特定特征,以实现准确诊断和提升可解释性。然而,当前的研究主要集中在利用因果注意力来学习类特定特征,但由于无意中关注了类无关特征,它们难以解释真正的病因。为了解决这一挑战,我们提出了一种新的结构因果模型(SCM),将类特定注意力视为因果、虚假和噪声因素的混合,并提出了一种新颖的基于信息瓶颈的因果注意力(IBCA),能够学习用于医学图像MLC的判别性类特定注意力。具体而言,我们提出学习高斯混合多标签空间注意力,以过滤掉类无关信息并捕获每个类特定的注意力模式。然后,提出了一种基于对比增强的因果干预,通过将多头注意力与高斯混合多标签空间对齐,逐步减轻虚假注意力并减少噪声信息。在Endo和MuReD上的定量和消融实验结果表明,IBCA优于所有方法。与各项指标的第二好结果相比,IBCA在MuReD上的CR提升了6.35%,OR提升了7.72%,mAP提升了5.02%;在Endo上的CR提升了1.47%,CF1提升了1.65%,mAP提升了1.42%。

英文摘要:

Multi-label classification (MLC) of medical images aims to identify multiple diseases and holds significant clinical potential. A critical step is to learn class-specific features for accurate diagnosis and improved interpretability effectively. However, current works focus primarily on causal attention to learn class-specific features, yet they struggle to interpret the true cause due to the inadvertent attention to class-irrelevant features. To address this challenge, we propose a new structural causal model (SCM) that treats class-specific attention as a mixture of causal, spurious, and noisy factors, and a novel Information Bottleneck-based Causal Attention (IBCA) that is capable of learning the discriminative class-specific attention for MLC of medical images. Specifically, we propose learning Gaussian mixture multi-label spatial attention to filter out class-irrelevant information and capture each class-specific attention pattern. Then a contrastive enhancement-based causal intervention is proposed to gradually mitigate the spurious attention and reduce noise information by aligning multi-head attention with the Gaussian mixture multi-label spatial. Quantitative and ablation results on Endo and MuReD show that IBCA outperforms all methods. Compared to the second-best results for each metric, IBCA achieves improvements of 6.35\% in CR, 7.72\% in OR, and 5.02\% in mAP for MuReD, 1.47\% in CR, and 1.65\% in CF1, and 1.42\% in mAP for Endo.

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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