Using Rough Set to Build Domain Ontology of Knowledge Information System

Previous studies of knowledge management have largely cantered on acquisition, management and sharing of knowledge within an enterprise. The role of this ontology is to provide a shared vocabulary and semantics between domain knowledge and vision. This ontology is a guide, which provides a vocabulary for the visual description of domain classes. Rough set theory is an extension of classical set theory and begins by relating certain information to all the objects under consideration. The paper proposes the method of constructiong ontology knowledge information system based on rough concept in order to constructing the ontology model of knowledge management. The experimental results indicate that the rough set building ontology algorithm achieves significant performance improvement.