Artificial Intelligence / Unit 8 AI 0409 worked example, 60 to 90 seconds
Opening the Drawer
The idea
Grading the stall tree on its locked rows produces the most important number in the unit: the gap between memory and learning.
In practice
Row seven — rain, weekend, festival, truly sold out. The tree asks its first question: festival — sold out. Correct. Row eight — rain, weekday, festival, truly not sold out. Festival — sold out. Wrong. The scoreboard: training accuracy six of six; test accuracy one of two. Read the gap honestly: the tree did not learn the stall — it learned six Saturdays, perfectly. The festival branch rests on two rows that both happened to sell out, an accident promoted into a confident rule, and the first festival weekday in the drawer broke it. That gap — memory outrunning learning — is the hazard every learner in this unit must manage, and the drawer is the only honest instrument that measures it.
Where people slip
A grade is spent once used for tuning — re-tuning until the same rows pass is memorization in a lab coat.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Builds on
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