1. Tools and methods for building watson;Brown,2013
2. Building Watson: An overview of the DeepQA project;Ferrucci;AI magazine,2010
3. Chen, Yang and Wang, Daisy Zhe. (2014) “Knowledge expansion over probabilistic knowledge bases” Proceedings of the 2014 ACM SIGMOD international conference on Management of data: 649-660.
4. Li, Yunyao and Reiss, Frederick R and Chiticariu, Laura (2011) “System: A declarative information extraction system” Proceedings of the 49th Annual Meeting of the Association for Computational Linguistics: Human Language Technologies: Systems Demonstrations: 109-114.
5. Shen, Warren and Doan, AnHai and Naughton, Jeffrey F and Ramakrishnan, Raghu (2007) “Declarative information extraction using datalog with embedded extraction predicates” Proceedings of the 33rd international conference on Very large data bases: 1033-1044.