7John H.Gennari,Mark A.Musen et al.The evolution ofProtégé:an environment for knowledge-based systems develop-ment.International Journal of Human-Computer Studies,2003,58(1):89-123.
8Xiaoli Yue,Cungen Cao jinxi Si,Qiangze Feng.A Meta-LevelElicitation of Knowledge Requirements.KEST’04.pp.273-279.2004.
9Eladio Gutiérrez,María A.Trenas,Julián Ramos,Francisco Cor-bera,Sergio Romero.A new Moodle module supporting automaticverification of VHDL-based assignments[J].Computers and Educa-tion,2010,54(2):562-577.
5Gruber T R. A Translation Approach to Portable Ontology Specifications[J]. Knowledge Acquisition, 1993, 5(2): 199-200.
6Studer R, Benjamins V R, Fensel D. Knowledge Engineering:Principles and Methods[J]. Data and Knowledge Engineering, 1998, 25(12): 161-197.
7Perez A G, Benjamins V R. Overview of Knowledge Sharing and Reuse Component: Ontologies and Problem-solving Methods[C]// Proc. ofIJCAI'99. Stockholm, Sweden: [s. n.], 1999.