1. C. Shi, C. Xu and X. Yang : Research of TFIDF Algorithm, Journal of Computer Applications, 2009, 29(6): 167 -170.
2. X. Fang, X. Liu: The Research of Mutual Information Feature Selection in Text Categorization, Computer Engineering and Applications , 2010, 46(34): 123-125.
3. Y. Zhang, B. Wan and Z. Xiong: The Research of Feature Dimension Reduction in Text Categorization, Journal of Computer Applications , 2012, 29 (7).
4. Y. Ren, R. Yang and M. Yin: Text Feature Selection Method Based on Information Gain, Computer Science, 2012, 39 (11): 127 -130.
5. J. Su,B. Zhang and X. Xu: Text Classification Technology Progress Research Based on Machine Learning, Journal of Software, 2006, 17(9) : 1848 -1859.