A knowledge aggregation method and system based on topic graph

Abstract

The invention belongs to the field of education technology, and discloses a knowledge aggregation method and system based on a theme graph, which constructs the element knowledge element of the theme graph based on a standard knowledge base; forms a theme graph based on a certain theme; and performs direct correlation The calculation of the association weight of knowledge elements and knowledge elements, the association weight calculation of knowledge elements and learning resources; the association weight calculation of knowledge tuples and knowledge elements in the aggregation association relationship, and the association weight calculation between knowledge tuples and knowledge tuples; Definition of the degree of deviation of personalized thematic maps and calculation of similarity between thematic maps. The present invention realizes the organic association between the user's personalized knowledge structure and knowledge, as well as the theme and learning resources. By associating knowledge elements or knowledge element groups, accurate and targeted knowledge services are provided, and the utilization efficiency of knowledge is improved. Realize the positive effect of knowledge aggregation.

Description

technical field [0001] The invention belongs to the field of education technology, and in particular relates to a knowledge aggregation method and system based on a theme map. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] Knowledge aggregation is a new research direction in the field of education and library information in recent years. It uses data mining, analysis and other methods to aggregate knowledge that may be related to extract the internal relationship between knowledge, thereby constructing multi-dimensional knowledge. System, rational organization of knowledge according to the relationship among learning resources. In the process of learning, we need to summarize the knowledge personalizedly, so as to form the individualized knowledge structure of the learners. [0004] Combined with the existing related research, the current research methods of knowledge aggregation mainly include the...

AI Technical Summary

Problems solved by technology

[0009] (1) In the context of the current massive knowledge resources, the knowledge aggregation method based on intelligence retrieval has a standardized format and strong structure, but at the same time has problems such as high cost and weak scalability, which cannot meet the current computing requirements of educational big data;

[0010] (2) The semantic representation of network-based aggregation methods is not strong enough;

[0011] (3) It cannot solve the problem of linking data involving multiple ontologies to realize question-and-answer retrieval based on natural language

[0012] (4) It is not possible to use common information science and technology to quickly build theme maps based on common information technologies such as relational databases and visualization tools

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