关键词: 查询扩展, 检索, 概念语义网络, 《计算机网络》

Abstract: Query expansion is adding word related words or phrases with the user query based on the original query. So that the expanded query sequence can more clearly express the user’s query, to overcome the natural language of the “ambiguity”. Based on Computer Network concept semantic networks, it can effectively find the query concept words and extended concept words in the field of computer network. Expand upward, it can connect all the original query semantic relationships of words, solving the problem of lack of contact between the query words, laid the foundation for the realization of expansion retrieval. This paper describes a method to create a concept semantic network, extraction method of correlation concept tree and a computer-implemented retrieval query expansion process. It provides technical support for the field of online learning teaching resources.

Key words: query expansion, retrieval, concept semantic networks, Computer Network