Topic

Overfitting

2 episodes

Ep 750 Jul 22, 2026

Overview: Model Generalization

We finally slow down and make model generalization click from the ground up: what it means, how you measure it, and why memorizing the training set is a dead end. We keep coming back to the same simple idea, because that’s the whole game.

Training Evals Model Generalization Neural Network
Ep 743 Jul 22, 2026

Overview: Train Test Split

We finally slow down on train-test split, because we keep bumping into it every time we talk about whether a model actually learned something. We use the sealed-final-exam picture to make the training set, validation set, test set, overfitting, leakage, and cross-validation click without assuming ML background.

Evals Training Train Test Split Model Generalization