Title: Design and application for the model of semantic query expansion based on domain ontology

Authors: Ziyu Liu; Junxia Chen; Xuehui Li; Ying Qu; Fachao Li

Addresses: School of Economics and Management, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China. ' School of Economics and Management, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China. ' Institute of Information Science & Engineering, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China. ' School of Economics and Management, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China. ' School of Economics and Management, Hebei University of Science and Technology, Shijiazhuang, Hebei, 050018, China

Abstract: Ontology method has become an important method in computer science, and it has been used in many domains, such as semantic web, search engine and knowledge management. Ontology plays an important role in semantic retrieval because of its specification, its good concept hierarchy and its support for logical reasoning. Domain ontology can be used to extend the user's retrieval words and index domain knowledge. Under which we can achieve semantic retrieval for domain knowledge. The semantic extension of user's retrieval words is the more important step in semantic retrieval system. First, this paper designed 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. The designed system consists of four main components: ontologies building, retrieval words semantic extension, semantic precomputation for document and semantic retrieval. Finally, this paper makes an experiment on high-speed railway domain. The experimental results show that the developed semantic retrieval system can improve the recall and precision.

Keywords: domain ontology; semantic query expansion; semantic retrieval; domain knowledge; high speed railways; high speed trains.

DOI: 10.1504/IJMIC.2012.047739

International Journal of Modelling, Identification and Control, 2012 Vol.16 No.3, pp.277 - 284

Published online: 17 Dec 2014 *

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