Prototype system for automatic ontology construction

作     者：Ludovic, Jean-Louis 

作者单位：Jönköping University 

学位级别：master

导师姓名：Eva Blomqvist

授予年度：2007年

主      题：Automatic ontology construction Ontology design pattern Protégé Ontology Natural Sciences Computer and Information Science Naturvetenskap Data- och informationsvetenskap TECHNOLOGY Information technology TEKNIKVETENSKAP Informationsteknik JTH Computer and Electrical Engineering JTH Data- och elektroteknik teknik teknik 

摘      要：Though a constantly increasing number of ontologies are now available on the Internet, the ontology construction process remains generally a manual task, so consequently an effort demanding task. As no unified ontology construction method is available in the literature, researchers started investigating different frameworks for automatically generating ontologies and, therefore shorten the time required for their construction. This master’s thesis presents a prototype system for automatic construction of ontology, based on ontology design patterns and unstructured texts, such as natural language texts. The use of ontology design patterns allow constructing well structured ontologies and reducing the demand of knowledge experts. A difference between our prototype system and the systems presented in the literature is, the possibility to increase accuracy of the generated ontology by selecting the more relevant terms and associations from the unstructured text and match them against the ontology design patterns. Also, a matching score is introduced to define the level of similarity between the terms extracted and the ontology design patterns. By setting a threshold value on the matching score, the relevant ontology design patterns are selected and used for the ontology construction process. The ontology construction framework used by the prototype system has been developed by the research group in Information Engineering of the School of Engineering, J?nk?ping University.; ?ven fast ett ?kande antal ontologier ?r tillg?ngliga p? Internet, ?r ontologikonstruktion fortfarande till st?rsta delen en manuell process, som d?rigenom kr?ver en stor arbetsinsats. Eftersom ingen enhetlig metodologi f?r att konstruera ontologier finns i litteraturen, forskare b?rjade unders?ka olika ansatser f?r att automatiskt generera ontologier och d?rigenom f?rkorta konstruktionstiden. Detta examensarbete presenterar ett prototypsystem f?r automatisk konstruktion av ontologier, baserat p? des