| Distance education has always been an important way of education. With the development of information technologies, modern distance education system has become a hot research topic. To a large extent, existing distance education platforms meet the educational needs of the people, but same problems still exists:low interaction with user and information retrieval efficiency deeding to be improved. In order to solve the above problems, several techniques of modern distance education system were studied in this paper:Firstly, for the low user interaction of the existing system, this paper proposes a method of recommending teaching resources based topic words, to recommend the latest teaching resources to the user. Extract query topic words from user users’ query records and resource top-words from titles of teaching resources, to match two kinds of topic words based on semantic similarity, to achieve the recommended teaching resources. Finally, a typical example is provided to demonstrate the validity of the method.Secondly, in the light of defects in expression of teaching information and query efficiency, which exists in those distance learning systems implemented by relational database, a teaching information management technique based on graph data is proposed. First, a storage model for teaching information is proposed. Then, based on the graphic storage model, this paper designed teaching information management methods, including querying, adding, deleting and updating. At the end, a demonstration shows the effectiveness of the method. Theoretical analysis proved that the efficiency in the teaching formation management graphic methods is better than those of traditional information management methods based on relational database implementation.Finally, based on above researches, a prototype system is designed and implemented. |
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