1. Erkan, G., Radev, G.R.: LexRank: graph-based lexical centrality as salience in text summarization. J. Artif. Intell. Res. 22(1), 457–479 (2004)
2. Wan, X., Yang, J., Xiao, J.: Towards an iterative reinforcement of simultaneous document summarization and keyword extraction. In: Proceedings of ACL 2007, Prague, pp. 552–559 (2007)
3. Cao, C., et al.: Progress in the development of national knowledge infrastructure. J. Comput. Sci. Technol. 17(5), 523–534 (2002)
4. Liu, H., Singh, P.: ConceptNet — a practical commonsense reasoning tool-kit. BT Technol. J. 22(4), 211–226 (2004)
5. Cambria, E., Hussain, A., Havasi, C., Eckl, C., Munro, J.: Towards crowd validation of the UK national health service. In: Websci 2010 (2010)