Lesson 1: What Even Is AI and a Model? — Starting From Zero

If you're not sure what an 'AI model' even is — this lesson is for you, and it has no code at all. We start from the most basic thing: what a model is, what it takes in and returns, and how it differs from regular software. The whole course builds on this understanding, so we'll take it slowly and b

A model is like an experienced expert who has seen thousands of examples. Nobody wrote it rules — it 'picked them up' itself, and now it can give a quick answer about something new.

Model: A 'machine' that takes input (an image, text, numbers) and returns output (a label, number, text). It learned its rules from examples, not from a programmer.
Weights: The collection of numbers inside the model — where everything it learned is 'stored'. They were set during training and don't change during use.
Input/output: Input is what goes into the model; output is the answer that comes out. E.g. input = an image, output = 'cat'.