Abstract: Ontology,the most important foundation of the semantic web,is used to describe the knowledge of a specific domain.In this study a methodology to construct ontology semi-automatically is proposed.By using the Formal Concept Analysis (FCA) algorithm and the specific features of Chinese language,the methodology builds both concept and instance layers of ontology quickly.Experiments have shown promising potential for the methodology in knowledge integrating and sharing.

Key words: ontology, semantic Web, FCA, features of Chinese