In this chapter, we introduce the overall structure of machine learning using the simplest example. The Simplest Machine Learning Model This is a basic linear regression model: given 18 points, find a line that is closest to each point. Now let’s use machine learning methods to find this line. Define the Model We know the equation of a line is: $$ y = ax+b $$ We use it as our model, where $a$ and $b$ are the parameters we need to train using machine learning. ...