This tutorial code: https://github.com/MorvanZhou/tutoria... In machine learning, we have supervised learning, and this this supervised learning can be divided into Regression and Classification problem. Regression problem is to predict a continuous value, such as the house price, hight of flight. While the classification problems is to distinguish from class to class, such as tell the difference between dogs and cats. All the practice we did before are the regression problems, so I will show you how to do classification this time.