[1] Liu Fang, Yu Clement, Meng Weiyi. Personalized web search by mapping user queries to categories[A].In:Proceedings of the Eleventh International Conference on Information and Knowledge Management[C]. New York: ACM Press, 2002.558-565.
[2] Youns Hafri, Chabane Djeraba. High performance crawling system[A].In:Proceedings of the 6th ACM SIGMM International Workshop on Multimedia Information Retrieval[C]. New York: ACM Press, 2004.299-306.
[3] Christophides Vassilis, Cluet Sophie, Simeon Jerome. On wrapping query languages and efficient XML integration[A].In: Proceedings of ACM SIGMOD Conference on Management of Data[C]. New York: ACM Press, 2000. 141-152.
[4] Knoblock Craig A, Minton Steven, Ambite Jose Luis. The ARIADNE approach to web-based information integration[J]. International Journal of Cooperative Information Systems, 2001, 10(1, 2):145-169.
[5] Decker S, Erdmann M, Fensel D. Ontology based access to distributed and semi-structured information[A]. In: Semantic Issues in Multimedia Systems[C]. Boston: Kluwer Academic Publisher, 1999:351-369.
[6] Xu Youzhi, Shen Jie, Chen Zhimin. Ontology-based information retrieval of web services in virtual enterprise[A]. In:Proceedings of the IEEE International Conference on Services Computing[C]. Shanghai, China, 2004.441-444.
[7] Corradini F, Mariani L, Merelli E. An agent-based approach to tool integration [J]. Journal of Software Tools Technology Transfer, 2004, 6(3):231-244.
[8] Li Shanping, Yin Qiwei, Hu Yujie, et al. Overview of researches on ontology [J]. Journal of Computer Research and Development, 2004, 41(7): 1041-1052.(in Chinese)
[9] Niles Ian, Pease Adam. Towards a standard upper ontology[A]. In: Proceedings of the Second Conference on Formal Ontology in Information Systems[C]. New York: ACM Press, 2001. 2-9.