7Tan Pangning. Introduction to data mining[M]. Upper Saddle River, NJ, USA: Pearson Education, 2006.
8Xie Tao, Thummalapenta S, Lo D, et al. Data mining for software engineering[J]. Computer, 2009, 42: 55-62.
9Wheeler D. Linux kernel 2.6: It's worth more! 2004.
10Royce W W. Managing the development of large software systems: concepts and techniques[C]//Proceedings of the 9th International Conference on Software Engineering (ICSE '87), Monterey, CA, USA, 1987. Los Alamitos, CA,USA: IEEE Computer Society, 1987: 328-338.