3Gruber T R. Toward Principles for the Design of Ontol- ogies Used for Knowledge Sharing[C]//In: Proceedings of the International Workshop on Formal Ontology,Pa- dova, 1993: 907-928.
4Perez A G, Benjamins V R. Overview of KnowledgeSharing and Reuse Components: Ontologies and Prob- lem Solving Methods[C]//In: Proceedings of the IJ- CAI-99 workshop on Ontologies and Problem Solving Methods(KRR5),Stockholm, 1999:1 - 15.
5Frank M, Eric M. RDF Primer [EB/OL]. http://www.w3. org/TR/2OO4/REC-rdf-primer-20040210/,2013-02- 02.
6W3C. DAML + OIL Web Ontology Language[EB/OL]. hnp://Web.w3 .org/TR/daml：oi：-referenee,2013-02- 02.
7Nizar G, Khaled K, Rose D. Supporting Patent Mining by using Ontology-based Semantic Annotations[C]// In: IEEE/WIC/ACM International Conference on Web Intelligence,Fremont, 2007: 435-438.
8Giereth M. Visualization Enhanced Semantic Wikis for Patent Information[C]//In: 12th Information Visual- isation International Conference,London, 2008: 185-190.
9Liping Z. A Construction Method of Ontology in Patent Domain Based on UML and OWL[C]//In: International Conference on Information Management, Innovation Management and Industrial Engineering, Xi'an, 2009: 224-227.
10Siddharth T, Gloria L, Kincho L, et al. Developing an ontology for the U.S. patent system[C]//In: Proceed- ings of the 12th Annual International Digital Govern- ment Research Conference: Digital Government Inno- vation in Challenging Times,2011 : 157-166.
