Research and Construction of Classical Formulas Knowledge Graph Based on Ontology

Classical formula is an important part and basis of traditional Chinese prescriptions. The effective storage and expression of classical formula knowledge in ancient books and modern documents is a key issue for studying and using classical formulas. This paper standardized and normalized the contents of the classic formula in "Treatise on Exogenous Febrile Disease" and "The Synopsis of the Golden Chamber", collected and organized classical formulas related documents from China National Knowledge Infrastructure (CNKI). Ontology construction tool Protégé is used to establish the domain ontology of classical formulas, and Neo4j graph database is used to construct the knowledge graph of ancient books and modern CNKI documents. 296 ancient classical formula items and 11175 modern documents from CNKI are collected, normalized and stored in database as the data source of this research. On the basis of these work, constructed the ontology and knowledge graph of classical formulas and built an application system for knowledge query. Constructing knowledge graph from top to bottom based on ontology can express and visualize the related knowledge of classical formulas accurately and efficiently. The construction strategy mentioned in this paper has got a good result and showed great potential in traditional Chinese medicine knowledge domain.