Classical models built from the math you already know
Every model in this course looks different on paper: a straight line, a handful of neighbors to poll, a tree of yes or no questions, a boundary drawn between two colors of dots. Underneath all of them sits one shared control, and it decides more about a model's behavior than the specific formula does. That control is called capacity: how much freedom a model has to bend and twist itself around the data it sees.
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▶ The Overfitting Dial: Capacity, Train vs Held-out