1. Frost A. Introduction to Knowledge Base Systems. Macmillan Publishing Company, Inc., 1986
2. Hua W, Song Y Q, Wang H X, Zhou X F. Identifying users’ topical tasks in Web search. In: Proceedings of the 6th ACM International Conference on Web Search and Data Mining. 2013, 93–102
3. Song Y Q, Wang H X, Wang Z Y, Li H S, Chen W Z. Short text conceptualization using a probabilistic knowledgebase. In: Proceedings of the 22nd International Joint Conference on Artificial Intelligence. 2011, 2330–2336
4. Wang J J, Wang H X, Wang Z Y, Zhu K Q. Understanding tables on the Web. In: Proceedings of the International Conference on Conceptual Modeling. 2012, 141–155
5. Deshpande O, Lamba D, Tourn S, Subramaniam S, Rajaraman A, Harinarayan V, Doan A. Building, maintaining, and using knowledge bases: a report from the trenches. In: Proceedings of ACM Special Interest Group on Management of Data. 2013, 1209–1220