4Andrei Broder. A taxonomy of web search [J]. ACM SIGIR Forum, 2002,36(2) : 3 - 10.
5Gong Cheng, Weiyi Ge, Yuzhong Qu. Falcons: Searching and Browsing Entities on the Semantic Web, International World Wide Web Conference, Proceeding of the 17th international conference on World Wide Web Beijing [M].China POSTER SESSION: Posters,2008:1101-1102.
6Li Ding et al. "Swoogle: A Search and Metadata Engine for the Semantic Web", Conference on Information and Knowledge Management Proceedings of the thirteenth ACM international conference on Information and knowledge management Washington, D.C.[M]. USA SESSION: KM-4 (knowledge management): distributed knowledge management, 2004:652-659.
8Honghan Wu, Gong Cheng, and Yuzhong Qu Falcon-S.An Ontology-Based Approach to Searching Objects and Images in the Soccer Domain[EB/OL]. http://iws.seu.edu.cn/publications/wcq06,2008-10- 15.
9Jie Tang, Jing Zhang, Duo Zhang, Limin Yao, and Chunlin Zhu. ArnetMiner: An Expertise Oriented Search System for Web Community. Semantic Web Challenge. In Proceedings of the 6th International Conference of Semantic Web (ISWC'2007) [EB/OL].http://keg.cs.tsinghua.edu.cn/persons/tj/ ametminer/arnetminer.html,2008-11-13.
10Danny Sullivan. Google 2.0: Google Universal Search [EB/ OL]. http://searchengineland.com/google-20-google -universal-search-11232,2007-05-16.