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arXiv 2301.01481cs.CVcs.CYcs.LG
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基于学习正交表示的多敏感属性医学图像分类公平性研究

On Fairness of Medical Image Classification with Multiple Sensitive Attributes via Learning Orthogonal Representations

The University of British Columbia(不列颠哥伦比亚大学);The Chinese University of Hong Kong(香港中文大学)

Wenlong Deng, Yuan Zhong, Qi Dou, Xiaoxiao Li

摘要:

减轻机器学习模型的歧视在医学图像分析中得到了越来越多的关注。然而,罕见的作品集中在多个敏感的人口统计数据的患者的公平治疗,这是一个关键的,但现实世界的临床应用具有挑战性的问题。在本文中,我们提出了一种新的方法,公平的表示学习方面的多敏感属性。我们追求目标和多敏感表示之间的独立性,实现正交的表示空间。具体地说,我们通过将目标信息保持在低秩敏感空间的补空间上来增强列空间的正交性。此外,在行空间中,我们鼓励目标和敏感表示之间的特征维度是正交的。在CheXpert数据集上进行了大量实验,证明了该方法的有效性。据我们所知,这是第一个工作,以减轻不公平的多个敏感属性在医学成像领域。

英文摘要:

Mitigating the discrimination of machine learning models has gained increasing attention in medical image analysis. However, rare works focus on fair treatments for patients with multiple sensitive demographic ones, which is a crucial yet challenging problem for real-world clinical applications. In this paper, we propose a novel method for fair representation learning with respect to multi-sensitive attributes. We pursue the independence between target and multi-sensitive representations by achieving orthogonality in the representation space. Concretely, we enforce the column space orthogonality by keeping target information on the complement of a low-rank sensitive space. Furthermore, in the row space, we encourage feature dimensions between target and sensitive representations to be orthogonal. The effectiveness of the proposed method is demonstrated with extensive experiments on the CheXpert dataset. To our best knowledge, this is the first work to mitigate unfairness with respect to multiple sensitive attributes in the field of medical imaging.

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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