[Fri Oct 10 23:58:01 CST 2014]: update gaussian discriminant analysis
[Fri Oct 10 23:58:01 CST 2014]: update hidden markov model
[Fri Oct 10 23:58:01 CST 2014]: update logistic regression
[Fri Oct 10 23:58:01 CST 2014]: update matrix factorization
[Fri Oct 10 23:58:01 CST 2014]: update naive bayes model
[Fri Oct 10 23:58:01 CST 2014]: update neural network model