Advanced · every module free · 9 challenges
The forward and backward pass built from nothing, then stacked until it is deep.
Splits, the bias-variance recipe, regularization, initialization and the gradient check that finds the bug.
Mini-batches, momentum, Adam, schedules, and the hyperparameter search that finds the run.
One number to optimize, a human yardstick to beat, and an error analysis that says what to do next.
The convolution, the layer built from it, and the architectures that made depth work.
Finding where the object is, drawing its outline, and telling one face from another.
Recurrence, backpropagation through time, and the gates that fixed its memory.
Turning words into vectors whose geometry means something -- and the tokenizer underneath.
The bottleneck, the attention that removed it, and the architecture that dropped recurrence entirely.