I like nonsense; it wakes up my brain cells.
—Dr. Seuss
This chapter covers the basics of neural networks, a.k.a. deep learning. We discuss various foundational topics as follows: gradient-based optimization of input and parameters of the function (Section 5.1), linear models (Section 5.2), deep and dense neural network (Section 5.3), activation functions (Section 5.4), loss functions (Section 5.5), and optimization (Section 5.6) and regularization (Section 5.7) techniques. Finally, we summarize the chapter in Section 5.8.
5.1 Gradient-Based Optimization
In this section, we introduce ...