Knowledge Base, Ontology and Expert System in Knowledge Engineering
知识工程中的知识库、本体与专家系统

With the development of the Semantic Web, the interoperability and sharing of expert system were put for- ward more advanced requests. The researches for new knowledge representation and knowledge base systems are im- portant trend. As a formal, explicit specification of a shared conceptualization, ontologies provide frames for inte- roperability between different systems and can solve the sharing and interoperability problem effectively. There were a variety of doubts in some beginners＇ mind with the concepts of knowledge base, ontology and expert system. Based on the author＇s understanding and practice, the systematic comparative analysis between knowledge base, ontology and expert system in the domain of knowledge engineering were proposed in this paper, in order to make these terms less confused and more clearly comprehensible.