| As online learning is becoming increasingly popular in current era,a suitable teaching resource platform is convenient for teaching acts.Focusing on data structure course knowledges,this paper constructs a visible knowledge graph,and then accomplish the teaching resource platform.Firstly,based on the target data source,we construct a data structure khowledge graph and graph database to store data structure knowledge and semantic relations.Secondly,utilizing the existing resource,we realize a visual platform,which achieves visible and screening graph and knowledge card,as well as functions of collaborative editing of the both,in order to guarantee correctness and timeliness of the platform.Finally,combined with the data,following the step of sentence segmentation,lexical transformation and semantic analysis,we achieve a semantic retrieval model based on knowledge graph to understand user’s retrieval requirements at semantic level,which improves user experience and retrieval efficiency.The resource platform in this paper combines current advanced knowledge graph technology and graph database technology with teaching platform,meanwhile,the knowledge graph and knowledge cards displayed can be screened and edited according to actual needs.The platform we realize benefits the existing subject knowledge retrieval system,broadens the user’s knowledge scope,forms a complete knowledge system,and lays a solid foundation for the subsequent use of this knowledge graph for knowledge reasoning and other related work. |