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arXiv 2004.13515cs.AIcs.CVeess.IV

Addressing Artificial Intelligence Bias in Retinal Disease Diagnostics

Applied Physics Laboratory, The Johns Hopkins University(约翰斯·霍普金斯大学应用物理实验室);Retina Division, Wilmer Eye Institute, The Johns Hopkins University School of Medicine(约翰斯·霍普金斯大学医学院威尔玛眼科研究所视网膜科);Retina Division, Department of Ophthalmology, Brazilian Center of Vision (CBV) Eye Hospital(巴西视觉中心(CBV)眼科医院眼科视网膜科)

Philippe Burlina, Neil Joshi, William Paul, Katia D. Pacheco, Neil M. Bressler

英文摘要:

This study evaluated generative methods to potentially mitigate AI bias when diagnosing diabetic retinopathy (DR) resulting from training data imbalance, or domain generalization which occurs when deep learning systems (DLS) face concepts at test/inference time they were not initially trained on. The public domain Kaggle-EyePACS dataset (88,692 fundi and 44,346 individuals, originally diverse for ethnicity) was modified by adding clinician-annotated labels and constructing an artificial scenario of data imbalance and domain generalization by disallowing training (but not testing) exemplars for images of retinas with DR warranting referral (DR-referable) and from darker-skin individuals, who presumably have greater concentration of melanin within uveal melanocytes, on average, contributing to retinal image pigmentation. A traditional/baseline diagnostic DLS was compared against new DLSs that would use training data augmented via generative models for debiasing. Accuracy (95% confidence intervals [CI]) of the baseline diagnostics DLS for fundus images of lighter-skin individuals was 73.0% (66.9%, 79.2%) vs. darker-skin of 60.5% (53.5%, 67.3%), demonstrating bias/disparity (delta=12.5%) (Welch t-test t=2.670, P=.008) in AI performance across protected subpopulations. Using novel generative methods for addressing missing subpopulation training data (DR-referable darker-skin) achieved instead accuracy, for lighter-skin, of 72.0% (65.8%, 78.2%), and for darker-skin, of 71.5% (65.2%,77.8%), demonstrating closer parity (delta=0.5%) in accuracy across subpopulations (Welch t-test t=0.111, P=.912). Findings illustrate how data imbalance and domain generalization can lead to disparity of accuracy across subpopulations, and show that novel generative methods of synthetic fundus images may play a role for debiasing AI.

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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