6Alexander Maedche, Steffen Staab. Semi-automatic Engi- neering of Ontologies from Text [ C ]//Proceedings of the 12nd International Conference on Software Engineering and Knowledge Engineering, Chicago, USA, Jul 5- 7, 2000: 231 - 239.
7Paolo Bouquet, Marc Ehrig, Jero me Euzenat, et al. Spec- ification of a common framework for characterizing align- ment[ EB/OL]. Knowledge Web deliverable D2.2. lv2, 2004. http ://www. aifb. uni-karlsruhe, de/WBS/phWpub/ kweb - 221. pdf. (Accessed on Nov 13, 2006).
8Roberto Navigli, Paola Velardi. Learning Domain Ontolo- gies from Document Warehouses and Dedicated Web Sites [ C ] //Computational Linguistics. MIT Press, 2004, 50 (2) : 151 - 179.