Level 4 of 11 · AI Basics lab
Watch a model learn, then watch it memorise
Level 4 of 11 in the AI Basics lab: a free AI basics exercise at Intermediate level, which takes about 15 minutes. Press Train and watch the dividing area redraw and the error fall. Then see why a model that scores 100 percent can still fail.
Goal
Press Train and watch the dividing area redraw and the error fall.
Done when
The acceptance test marks the skills this level practises.
- Training
- Training and test data
- Overfitting
Skills
- Training
- Training and test data
- Overfitting
Before you start
Level 3, Data and labels: what we see and what we want to say, comes first. Do it first if the ideas are new to you.
Free, in your browser, nothing to install. Your work is saved on this device. Updated 1 Nov 2026.