Hands-On Machine Learning with TensorFlow.js

General polynomial model

A polynomial model is a general form of linear regression model. The linear regression model can be described as a linear equation that has the first-degree term of the explanatory variable. The polynomial regression model needs to have higher degree terms to have more expressive power. Polynomial regression can be described mathematically as follows:

Theoretically, the infinite number of the sum of polynomial terms can express any function. This indicates that the model can fit any kind of sample by adding more terms. Let's see how the model can represent a more complicated curve, as shown in the previous section. ...