Purpose/Significance To review the knowledge discovery methods based on knowledge graph in the biomedical field,and to provide references for researchers.Methods/Process The paper summarizes the knowledge discovery methods based on knowledge graph by systematically searching and analyzing the relevant literatures,and compares the advantages and disadvantages of various knowl-edge discovery methods.It points out that the limitations and challenges of knowledge discovery methods based on knowledge graph in the biomedical field,and puts forward suggestions and prospects.Result/Conclusion In the future research,it is suggested to improve the in-terpretability of knowledge discovery results,build an effective result evaluation framework,and establish a standardized knowledge dis-covery process with multi-domain experts'collaboration,so as to improve the quality and efficiency of knowledge discovery research.
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