Research On Ontology-based E-Learning Services Publication And Discovery

With rapid development of Internet, more and more people share, disseminate, exchange information and knowledge through Internet. E-Learning is becoming an important way to acquire knowledge. E-Learning refers to the teaching and learning activities through the Internet, which is able to take full advantages of Internet and is a promising way for lifetime education. At present, E-Learning resources are sharply increasing. New approach is urgently needed, which is able to effectively organize and manage E-learning resources, and further to support the reuse and access to E-learning resources.The emergence of Ontology technology provides an effective way for the organization and management of domain knowledge. Therefore, in order to share and reuse E-Learning resources and support access to E-learning resources, Discipline Ontology is adopted to formally express the shared concepts and the relations among concepts in a discipline; E-learning resources are encapsulated as E-Learning Services. Discipline Ontology is used in the process of E-Learning services publication and discovery, in order to improve efficiency and accuracy of E-Learning services publication and discovery.Research works in this thesis are as follows. At first, the latest technologies on Web Services and Semantic Web, including Ontology, WSDL, UDDI, SOAP and OWL-S, etc, are discussed. Then, Ontology and the Semantic Web Services Description Model OWL-S are elaborated. A Computing Discipline Ontology is built; A Discipline Ontology based framework for E-Learning services publication and discovery is presented, which aims to support the sharing and reuse of E-learning resources and further to realize semantic identification and matching in the process of E-Learning services publication and discovery. Finally, the design and implementation of an E-Learning Services Publication System prototype is introduced.In this thesis, a semantic publication system of E-Learning services is designed on the basis of Ontology technology and Web Service technology, which provides a better support for further research on semantic discovery of E-Learning services.