通过层次自回归语言模型合成高维纵向电子健康记录
Brandon Theodorou1,2, Cao Xiao2, Jimeng Sun3,4
1University of Illinois at Urbana-Champaign, 201 North Goodwin Avenue, Urbana, IL, USA.
Nature communications
|August 31, 2023
概括
我们开发了HALO,这是一种用于生成现实的合成电子健康记录 (EHR) 的新方法. 这种方法保留了用于机器学习 (ML) 的数据属性,而不存在隐私风险.
科学领域:
- 医疗信息学 医疗信息学
- 机器学习 机器学习
- 数据 隐私 数据 隐私 数据
背景情况:
- 生成现实的合成电子健康记录 (EHR) 对机器学习 (ML) 和统计分析至关重要.
- 现有的方法难以产生高保真度,高维度的EHR数据,同时保持隐私.
研究的目的:
- 引入层次自行回归语言模型 (HALO) 来生成纵向,高维的合成EHR数据.
- 确保生成的数据保留真实电子健康记录的统计属性,并使隐私保护的ML模型培训成为可能.
主要方法:
- 在医疗代码,临床访问和患者记录上,HALO模拟了一个概率密度函数.
- 这种自动回归方法可以生成现实的电子健康记录数据,而不需要变量选择或聚合.
主要成果:
- 哈洛生成高准确度的合成EHR数据,其高维疾病代码概率与真实EHR数据密切匹配 (R2>0.9).
- 在HALO生成的数据上训练的模型实现了与在真实EHR数据上训练的模型相比的准确性.
结论:
- HALO提供了一个可行的解决方案,用于创建现实的,保护隐私的合成EHR数据.
- 该方法促进了准确的下游ML模型开发和分析,而不会损害患者的隐私.
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