Research on the Construction of Keyword Hierarchy Relationship Based on Co-occurrence Relationship

Abstract

[Purpose/Significance] Keyword is the most widely used literature knowledge unit, and the in-depth mining of its semantic relationship can provide underlying support for knowledge association and resource recommendation. [Method/Process] Based on the relationship between the direct co-occurrence and indirect co-occurrence of keywords, the correlation between keywords was mined, and on this basis, the distribution of keywords was analyzed, and the hierarchical structure between keywords was constructed according to the size of the concept range of keywords. [Result/Conclusion] Taking "knowledge graph" as the root node, this paper demonstrates the steps of construction of keywords hierarchy. The research shows that the method is feasible and effective, and it can construct the hierarchical structure of keywords better．

Keywords

• keywords of scientific technological literature