在病理学中的人工智能模型的机械可解释性的反事实扩散模型
Laura Žigutytė1, Tim Lenz1, Tianyu Han2
1Else Kroener Fresenius Center for Digital Health (EKFZ), Faculty of Medicine and University Hospital Carl Gustav Carus, TUD Dresden University of Technology, Dresden, Germany.
bioRxiv : the preprint server for biology
|November 18, 2024
概括
通过MoPaDi (Morphing histoPathology Diffusion) 改进了基因病理学中的深度学习解释性. 这种方法产生了现实的反事实解释,揭示了更好的生物标志物发现的关键形态特征.
科学领域:
- 计算病理学计算病理学
- 医学中的人工智能
- 发现生物标志物的发现.
背景情况:
- 深度学习模型可以从组织病理学全幻灯片图像中识别预测和预后生物标志物.
- 将深度学习应用于组织病理学的一个重大挑战是这些模型缺乏可解释性.
研究的目的:
- 开发和验证一种新的方法,用于产生反事实的机械解释在他的病理学.
- 通过揭示预测的关键形态驱动因素来提高数字病理学中使用的深度学习模型的可解释性.
主要方法:
- 开发了MoPaDi (Morphing histoPathology Diffusion),一种利用扩散自编码器来操纵病理图像补丁的系统.
- MoPaDi改变了图像形态,扭转了生物标志物状态,并为弱监督的任务结合了多个实例的学习.
- 在四个数据集上进行了验证,用于组织/癌症类型分类,幻灯片起源和微观卫星不稳定性生物标志物预测.
主要成果:
- 莫帕迪显示出出色的图像重建质量 (MS-SSIM 0.966-0.992) 和强大的分类性能 (AUC 0.76-0.98).
- 为组织类型分类生成的反事实图像非常现实,在一个用户研究中正确识别了63.3-73.3%.
- 病理学家在各种分类任务中从反事实图像中确定了有意义的形态特征.
结论:
- 莫帕迪成功地为基因病理学中的深度学习预测生成了现实的反事实解释.
- 该方法有效地揭示了影响模型预测的关键形态特征,从而提高了模型的可解释性.
- 这种方法对推动生物标志物发现和数字病理学的理解具有前景.
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