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arXiv 1903.08652cs.LGstat.ML
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学习电子健康记录的层次表示用于临床结果预测

Learning Hierarchical Representations of Electronic Health Records for Clinical Outcome Prediction

Peking University(北京大学);Carnegie Mellon University(卡内基梅隆大学);Mila - Québec AI Institute(米拉-魁北克人工智能研究所);HEC Montréal(蒙特利尔高等商学院)

Luchen Liu, Haoran Li, Zhiting Hu, Haoran Shi, Zichang Wang, Jian Tang, Ming Zhang

摘要:

基于电子健康记录(EHR)的临床结局预测在提高医疗质量方面起着至关重要的作用。传统的深度序列模型无法捕捉编码在长而不规则的临床事件序列中的丰富的时间模式。我们观察到,临床事件在长时间尺度上表现出强烈的时间模式,而在短时间内的事件往往是无序的共现。因此,我们提出了不同的机制,在不同的时间尺度上模拟临床事件。我们的模型学习事件序列的分层表示,以自适应地区分短距离和长距离事件,并准确地捕获核心时间依赖性。在实际临床数据上的实验结果表明,该模型在预测死亡和ICU入院时的AUC值分别达到0.94和0.90,并且成功地识别了不同临床结局预测任务中的重要事件

英文摘要:

Clinical outcome prediction based on the Electronic Health Record (EHR) plays a crucial role in improving the quality of healthcare. Conventional deep sequential models fail to capture the rich temporal patterns encoded in the longand irregular clinical event sequences. We make the observation that clinical events at a long time scale exhibit strongtemporal patterns, while events within a short time period tend to be disordered co-occurrence. We thus propose differentiated mechanisms to model clinical events at different time scales. Our model learns hierarchical representationsof event sequences, to adaptively distinguish between short-range and long-range events, and accurately capture coretemporal dependencies. Experimental results on real clinical data show that our model greatly improves over previous state-of-the-art models, achieving AUC scores of 0.94 and 0.90 for predicting death and ICU admission respectively, Our model also successfully identifies important events for different clinical outcome prediction tasks

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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