As complete and detailed clinical information resources of being produced and recorded during patients ' treatment, structured electronic medical record also contains a large number of unstructured text information, such as medical records of clinical manifestations recorded by natural language. 作为病人在医疗机构历次就诊过程中产生和被记录的完整、详细的临床信息资源,结构化的电子病历中还包含有大量的非结构化文本信息,例如以自然语言记录的临床表现等医疗记录。