THE ONTOLOGICAL SYSTEM BASED ON LOGIC
Abstract: We knew that the Semantic Web is based on the Resource Description Framework(RDF), which integrates a variety of applications using XML for syntax and URI for naming, and Web Ontology Language(WOL) is used to publish and share sets of terms, supporting advanced Web Search, Software Agents and Knowledge Management. So it is very important to clarify the structure of knowledge for the intercommunion between a person and a computer that we should use the Ontological System based on logic in any kind of language. That is why I would introduce my study of the Ontological System made up of three kinds of Sets according to Co-Intelligence Science along with Basic Theory of Information Science here in this paper. Firstly，Single Sets can be shown in Single-List in Digital World; Secondly, Layered Sets defined in Double-List equaled to both Left Digital List (namely Single List) and Right Lingual List; Thirdly, Labeled Sets shown in Multi-List for Classified Contents would be systematically searching in the Double List.
Keywords：Semantic Web, Co-Intelligence, Ontological System, Labeled Sets, Layered Sets.