03. Lesson Outline

Hi, I'm Cezanne Camacho , I'll be teaching this lesson in tandem with Alexis, and later on, show you how to implement CNNs in PyTorchand use them in a variety of ways.

What is a feature?

I’ve found that a helpful way to think about what a feature is, is to think about what we are visually drawn to when we first see an object and when we identify different objects. For example, what do we look at to distinguish a cat and a dog? The shape of the eyes, the size, and how they move are just a couple of examples of visual features.

As another example, say we see a person walking toward us and we want to see if it’s someone we know; we may look at their face, and even further their general shape, eyes (and even color of their eyes). The distinct shape of a person and their eye color a great examples of distinguishing features!

Next, we’ll see that features like these can be measured, and represented as numerical data, by a machine.