Research Of Computer Network Domain Ontology Base On Semantic Web Technology

With the rapid development of the Internet, information has been explosive growth too. This brings convenient to people’s lives, but also makes troubles with getting the information that they really want. Semantic Web is an intelligent network capable of understanding human language, it can make people exchanges between the computer becomes as simple as communication between people. However, in order to realize the Semantic Web, it should have a complete knowledge system. In order to solve this problem naturally introduces Ontology. Ontology is to solve the Web information sharing and exchange on the basis of the semantic level, it is through the strict definition of the concept of the relationship between concepts and to determine the precise meaning of the concept, it has been recognized as a formal knowledge representation system. Therefore, the study of Ontology has become an object of domestic and foreign experts and scholars eager to study and discussion.Thesis, studied the following aspects:studied Ontology Development Status, in-depth study of domain ontology building process, including domain ontology description language analysis, summarize existing domain ontology establish various methods, in-depth analysis the process of building the domain ontology, by comparing the merits and drawbacks and the usability of the building methods, select the seven-steps method to build the domain ontology from first to last, also adjust and perfect it on the basis of the physical truth. On the basis of in-depth analysis of domain ontology theory, by comparing the development tools extensive using at the present, at last choose the Protege tools to build the domain ontology, base on the book "ENCYCLOPEDIA OF COMPUTER SCIENCE AND TECHNOLOGY (Second Edition)" built the conceptual system. Gathering domain vocabulary, clarify the relationship between the field and using vocabulary a to build the computer network domain ontology successfully. Then, by using Jena to achieve using an extension built based on domain ontology keywords. Therefore, at the last, it successfully built an information retrieval system, by counting the dependency of the concepts vehicle, which is expanded, and then through the keyword expansion and with the right query, can improve query efficiency in information retrieval.Built the computer network domain ontology can use in the semantic web applications structure, and also by building the computer network domain ontology on the knowledge system of computer networks have a clearer description of the exact concepts. The establishment of the computer network domain ontology for information retrieval and information recommendation is very helpful.