MultiFair: Multimodal Balanced Fairness-Aware Medical Classification with Dual-Level Gradient Modulation

Fuente: arXiv
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Autori principali: Zubair, Md, Zheng, Hao, Jonathan, Nussdorf, Armstrong, Grayson W., Shen, Lucy Q., Wilson, Gabriela, Tian, Yu, Zhu, Xingquan, Shi, Min
Natura: Preprint
Pubblicazione: 2025
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author Zubair, Md
Zheng, Hao
Jonathan, Nussdorf
Armstrong, Grayson W.
Shen, Lucy Q.
Wilson, Gabriela
Tian, Yu
Zhu, Xingquan
Shi, Min
author_facet Zubair, Md
Zheng, Hao
Jonathan, Nussdorf
Armstrong, Grayson W.
Shen, Lucy Q.
Wilson, Gabriela
Tian, Yu
Zhu, Xingquan
Shi, Min
contents Medical decision systems increasingly rely on data from multiple sources to ensure reliable and unbiased diagnosis. However, existing multimodal learning models fail to achieve this goal because they often ignore two critical challenges. First, various data modalities may learn unevenly, thereby converging to a model biased towards certain modalities. Second, the model may emphasize learning on certain demographic groups causing unfair performances. The two aspects can influence each other, as different data modalities may favor respective groups during optimization, leading to both imbalanced and unfair multimodal learning. This paper proposes a novel approach called MultiFair for multimodal medical classification, which addresses these challenges with a dual-level gradient modulation process. MultiFair dynamically modulates training gradients regarding the optimization direction and magnitude at both data modality and group levels. We conduct extensive experiments on two multimodal medical datasets with different demographic groups. The results show that MultiFair outperforms state-of-the-art multimodal learning and fairness learning methods.
format Preprint
id arxiv_https___arxiv_org_abs_2510_07328
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle MultiFair: Multimodal Balanced Fairness-Aware Medical Classification with Dual-Level Gradient Modulation
Zubair, Md
Zheng, Hao
Jonathan, Nussdorf
Armstrong, Grayson W.
Shen, Lucy Q.
Wilson, Gabriela
Tian, Yu
Zhu, Xingquan
Shi, Min
Machine Learning
Artificial Intelligence
Computer Vision and Pattern Recognition
Computers and Society
Medical decision systems increasingly rely on data from multiple sources to ensure reliable and unbiased diagnosis. However, existing multimodal learning models fail to achieve this goal because they often ignore two critical challenges. First, various data modalities may learn unevenly, thereby converging to a model biased towards certain modalities. Second, the model may emphasize learning on certain demographic groups causing unfair performances. The two aspects can influence each other, as different data modalities may favor respective groups during optimization, leading to both imbalanced and unfair multimodal learning. This paper proposes a novel approach called MultiFair for multimodal medical classification, which addresses these challenges with a dual-level gradient modulation process. MultiFair dynamically modulates training gradients regarding the optimization direction and magnitude at both data modality and group levels. We conduct extensive experiments on two multimodal medical datasets with different demographic groups. The results show that MultiFair outperforms state-of-the-art multimodal learning and fairness learning methods.
title MultiFair: Multimodal Balanced Fairness-Aware Medical Classification with Dual-Level Gradient Modulation
topic Machine Learning
Artificial Intelligence
Computer Vision and Pattern Recognition
Computers and Society
url https://arxiv.org/abs/2510.07328