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arXiv 1703.00538cs.CL
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基于对患者重要性的电子健康记录笔记中术语的无监督包围排序

Unsupervised Ensemble Ranking of Terms in Electronic Health Record Notes Based on Their Importance to Patients

University of Massachusetts Medical School(马萨诸塞大学医学院);Bedford Veterans Affairs Medical Center(贝德福德退伍军人事务医疗中心)

Jinying Chen, Hong Yu

摘要:

背景:电子健康记录(EHR)笔记包含大量的医学术语,患者可能难以理解。帮助患者的一种方法是减少信息过载,帮助他们专注于对他们最重要的医学术语。目的:这项工作的目的是开发FIT(为患者寻找重要术语),这是一种无监督的自然语言处理(NLP)系统,可以根据对患者的重要性对EHR笔记中的医学术语进行排名。研究方法:我们建立了一个新的无监督的集成排名模型,来自有偏随机游走算法,结合异构信息资源的排名候选人从每个EHR注意到FIT。具体来说,FIT集成了四个单一的视图的术语的重要性:患者使用的医疗概念,文档级的术语显着性,词出现的术语相关性,和主题的连贯性。它还包括部分信息的术语的重要性所传达的术语的不熟悉程度和语义类型。我们在90个专家注释的EHR笔记上评估了FIT,并将其与三种基准无监督集成排名方法进行了比较。结果:FIT对EHR笔记中的候选术语进行排序以识别重要术语的AUC-ROC达到0.885。当包括术语识别时,FIT从EHR笔记中识别重要术语的性能为0.813 AUC-ROC。它在大多数指标上都优于三个合奏排名。其性能对参数相对不敏感。结论:FIT可以自动识别对患者重要的EHR术语,并可能有助于制定个性化干预措施,以提高护理质量。通过使用无监督学习以及一个强大而灵活的信息融合框架,FIT可以很容易地应用到其他领域和应用。

英文摘要:

Background: Electronic health record (EHR) notes contain abundant medical jargon that can be difficult for patients to comprehend. One way to help patients is to reduce information overload and help them focus on medical terms that matter most to them. Objective: The aim of this work was to develop FIT (Finding Important Terms for patients), an unsupervised natural language processing (NLP) system that ranks medical terms in EHR notes based on their importance to patients. Methods: We built FIT on a new unsupervised ensemble ranking model derived from the biased random walk algorithm to combine heterogeneous information resources for ranking candidate terms from each EHR note. Specifically, FIT integrates four single views for term importance: patient use of medical concepts, document-level term salience, word-occurrence based term relatedness, and topic coherence. It also incorporates partial information of term importance as conveyed by terms' unfamiliarity levels and semantic types. We evaluated FIT on 90 expert-annotated EHR notes and compared it with three benchmark unsupervised ensemble ranking methods. Results: FIT achieved 0.885 AUC-ROC for ranking candidate terms from EHR notes to identify important terms. When including term identification, the performance of FIT for identifying important terms from EHR notes was 0.813 AUC-ROC. It outperformed the three ensemble rankers for most metrics. Its performance is relatively insensitive to its parameter. Conclusions: FIT can automatically identify EHR terms important to patients and may help develop personalized interventions to improve quality of care. By using unsupervised learning as well as a robust and flexible framework for information fusion, FIT can be readily applied to other domains and applications.

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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