Research on Domain Ontology Construction Based on Thesaurus of Geographical Science
Linbo Duan, Ping Qin, Lingfei Qian, Ting Xie · 2017
Compared with the traditional domain ontology construction method and the lifecycle thinking of software engineering, the main steps of constructing the domain ontology are to construct purpose, overall design, detailed design, ontology consistency test and ontology evaluation.Using "Thesaurus for Geographic Sciences" as data source and OWL as description language to construct domain ontology, the focus of the process is to determine the concept of the thesaurus, the level of relations between concepts and representations, relationships and so on, realizing conversion of the thesaurus to the domain ontology in the final.By constructing the domain ontology of geographic science, the semantic retrieval based on ontology is realized, solving the problem of traditional information retrieval based on grammatical matching and improving the quality of information retrieval. 1.IntroductionOntology, which originally belonged to the concept of the metaphysics branch of philosophical domain, was described as a systematic description of objective things, which was later introduced into the field of information science, and there is no unified concept.In the early 1990s, the concept of ontology was widely introduced into computers, especially artificial intelligence, knowledge engineering and other fields, as the basis of knowledge expression.Tom Gruber in Stanford University believes that ontology is a clear specification of the conceptual model, while Studer et al.in the University of Karlsruhe optimize the concept of ontology, concluding that ontology is a clear formal specification of shared conceptual models.At the beginning of this century, China began to study ontology in the field of library and information.At the same time, library and information is also an important place for ontology application, and then ontology got a wide range of applications in semantic web, intelligent information retrieval, natural language processing, knowledge management, heterogeneous information integration and so on.Traditional ontology construction is mainly based on manual construction of domain experts or dictionaries, which is time-consuming and low-automatic.Therefore, it is the focus of this paper to construct ontology with efficient methods and steps. 2.Research Status of Ontology Construction Based on ThesauriThe ontology, a visualization of concept, standardized the concept of abstraction in the real world, which makes the relationship between concept and concept, concept and object, concept and object more clear, and reduces the ambiguity to achieve knowledge reuse and sharing purpose.After the introduction of ontology into the field of computer science, many research institutions at home and abroad have carried out research on the related problems of domain ontology construction based on thesauri.At present, a large number of relatively mature ontology have been developed.Because of 2nd