Research Article

Clinical Named Entity Recognition from Chinese Electronic Medical Records Based on Deep Learning Pretraining

Table 1

Labeling rules.

Entity typesDefinitionMedical entities

DiseaseThe diagnosis made by doctors to patients or entities ending with “病” or “症” are collectively referred to as diseases.肺内隔离症
SymptomsSymptoms of discomfort, abnormalities, normal or abnormal examination results, or an unhealthy state of the patient, as well as the patient’s self-reported history.声音嘶哑、无结核病史
DrugThe specific drug name or class of drug given to the patient during treatment.地塞米松、抗生素
OperationThis includes screening programs and treatments. A test item is given to a patient in order to discover, deny, confirm, and find out more about the disease. Treatment refers to the treatment procedures and interventions that are imposed on patients to solve the disease or relieve symptoms.拍胸片、抗感染、胸腔穿刺术