Opinion Miner

http://weli.iteye.com/blog/1299455

http://blog.kaggle.com/category/dojo/

A good tutorial http://www.ats.ucla.edu/stat/r/dae/logit.htm

http://blog.csdn.net/lihaifeng555/article/details/4543752

alter table table_name convert to character set utf8; Reference: http://www.cnblogs.com/livingintruth/p/3433259.html