vibed/edu/.beans/edu-abdu--write-10-cross-entropy-loss-and-the-training-loop.md

title	status	type	priority	created_at	updated_at	parent
Write §10: Cross-entropy loss and the training loop	completed	task	normal	2026-03-13T22:02:02Z	2026-03-16T02:30:26Z	edu-u2w7

Next-token prediction loss: cross-entropy over the vocab. Adam optimiser. Training loop structure: batch → forward → loss → backward → step. No bells and whistles.