참고자료

[1] 〈R: A Language and Environment for Statistical Computing〉, R Development Core Team, R Foundation for Statistical Computing, Vienna, Austria, 2013.

[2] 《Data Mining: Practical Machine Learning Tools and Techniques, Third Edition》, Ian H. Witten, Eibe Frank, Mark A. Hall, The Morgan Kaufmann, 2011.

[3] 《Python for Data Analysis》, 웨스 맥키니Wes McKinney, O’Reilly Media, 2012.