a default extension to distributed description logics

IEEE Comp Soc, Web Intelligence Consortium, Assoc Comp Machinery, Beijing Univ Technol, Natl Nat Sci Fdn China, Microsoft Res Asia, China Comp Federat, Hong Kong Baptist Univ, Maebashi Inst Technol, Tsinghua UnivDescription Logic is now an active research area, which is applied universally to knowledge representation, Semantic Web and Ontology language. Compared with Description Logic, Distributed Description Logic can be used to better establish dis