Ziyu Liu
School of Economics and Management, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China
Xiaoming Zhang
School of Information Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China
Xuehui Li
School of Information Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China
ABSTRACT
Domain ontology can be used to extend the users retrieval words and index domain knowledge. This study discusses the semantic retrieval system based on semantic query expansion using domain ontology constructed by thesaurus and thematic words for High-speed Railway Knowledge. Firstly, according to the actual situation of high-speed railway domain that is comprised of different professional fields, this study puts forward a construction methodology of domain ontology based on thesaurus and thematic words of high-speed railway that is built by the experts. Guided by this method, we build various majors ontology of high-speed railway and then they are preliminary merged into one unified domain ontology of high-speed railway. Secondly, this paper designs the model of semantic query expansion based on domain ontology and gave five kinds of semantic expansion methods. Then the model of semantic query expansion is applied in semantic retrieval system. Thirdly, we design a semantic retrieval system and the model of semantic query expansion is applied in it. Finally, this study makes a comparison between traditional keyword search method and our semantic retrieval method. The experimental results show that the developed semantic retrieval system can improve the recall and precision.
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How to cite this article
Ziyu Liu, Xiaoming Zhang and Xuehui Li, 2013. An Approach of Ontology Construction and Semantic Query Expansion for High-speed Railway Domain Knowledge. Journal of Applied Sciences, 13: 4249-4260.
DOI: 10.3923/jas.2013.4249.4260
URL: https://scialert.net/abstract/?doi=jas.2013.4249.4260
DOI: 10.3923/jas.2013.4249.4260
URL: https://scialert.net/abstract/?doi=jas.2013.4249.4260
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