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English(EN) Spurious Attention Heads in Vision Transformers: Mechanistic Identification of Annotation-Driven Bias in Medical Chest X-Ray Analysis

Vision Transformer 模型在医学影像中表现出注释偏差

研究人员发现用于医学影像分析的 Vision Transformers (ViTs) 中存在显著偏差。在胸部 X 光片(尤其是在 COVID-19 病例中)中,一个特定的注意力头 L8H10(在 ViT-Base 16 中)被发现会关注角落的文本注释,而不是实际的医学病理。这种行为在多种 ViT 架构和数据集上都表现一致,令人惊讶的是,完全微调并未纠正此问题,反而可能加剧了它。输出层面的评估未能检测到这种偏差,凸显了进行机械审计以识别和纠正 AI 模型中此类注释驱动缺陷的必要性。 AI

影响 强调了机械可解释性对于揭示和修复用于医学诊断等关键应用的 AI 模型中隐藏偏差的必要性。

排序理由 学术论文,详细介绍了关于 AI 模型行为的具体机械发现。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv cs.CL 阅读 →

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Vision Transformer 模型在医学影像中表现出注释偏差

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报道来源 [1]

  1. arXiv cs.CL TIER_1 English(EN) · Joshua Muhumuza, Cornelius Kalenzi ·

    Vision Transformers 中的虚假注意力头:医学胸部 X 光分析中由标注驱动的偏差的机制识别

    arXiv:2610.21638v1 Announce Type: cross Abstract: Vision Transformers deployed in medical imaging exploit spurious correlations, yet the internal mechanisms remain unidentified and impossible to fix. We apply mechanistic interpretability to locate one such mechanism in ViT-Base 1…