Research On The Construction Of Knowledge Graph Based On Data Structure And Its Visualization Application

With the rapid development of online education,the demand for online learning resources is increasing and its quantity is also increasing explosively.However,the problems of fragmented and incoherent knowledge in various forms of learning resources have led to the "knowledge trek" of learners.Therefore,in the face of redundant online learning resources,how to clarify the learning direction in a short time,show the correlation between knowledge points,improve learning efficiency and master professional knowledge comprehensively,these four points are urgently needed to be resolved.With the continuous deepening of the knowledge graph and its visualization research in recent years,the knowledge graph has been applied to network learning.It can effectively comb and summarize knowledge resources by correlating the semantic relationship between knowledge,and the visualize knowledge structure to learners can help learners organize the knowledge.Knowledge in professional disciplines is difficult and knowledge structure in that is complex.Learners will encounter many difficulties in the process of knowledge acquisition and learning.For the Data Structure course.This article used knowledge graph construction technology and visualization technology to present the knowledge structure of the data structure course to learners concisely and clearly.The main research content of this article included the use of web crawler technology to collect and clean the curriculum-related knowledge data.Used the knowledge graph construction technology to generate the "entity-relationship-entity" triples from the collected data and used the graph database to store the triples.The front-end and backend integration were achieved through Django interactive technology.And the frontend interface of the hierarchical progressive mode was designed to present the knowledge content of multi-level structure and highly cross data structure to learners in a reasonable and concise manner in order to reduce the visual burden and the ease knowledge trek of the learners.This design improved the shortcomings of the existing visualization technology at multiple levels,low space utilization and unclear visual effects in knowledge presentation.