1. Zhang Kuo, Xu Hui, Tang Jie, et al. Keyword Extraction Using Support Vector Machine[C]//Proceedings of WAIM’ 2006. Hong Kong: Springer-Verlag, 2006:85(Ch).
2. Zhang Kevin. Online Document about ICTCLAS [EB/OL]. [2002-08-16]. http://www.nlp.org.cn/project/project.php?proj_id=6 .
3. Liu Qun, Zhang Huaping, YU Hongkui, et al. Chinese Lexical Analysis Using Hierarchical Hidden Markov Model[J]. Chinese Journal of Computer Research and Development, 2004, 41(8):1421–1429(Ch).
4. Anette H, Karlgren J, Jonsson A, et al. Automatic Keyword Extraction Using Domain Knowledge[C]//Proceedings of Second International Conference on Computational Linguistics and Intelligent Text Processing. Mexico City: Springer-Verlag, 2001:472.
5. Medelyan O, Witten A I H. Thesaurus-Based Index Term Extraction for Agricultural Documents[C]//Proc of the 6th Agricultural Ontology Service (AOS) Workshop at EFITA/WCCA. Vila Real: IEEE Press, 2005:1122.