Artificial Intelligence / Unit 2 AI 0063 short lesson, about 20 seconds
The Tree
Captions available
The idea
A tree is a graph that grows from one root by branching, so exactly one path leads from the root to any other item.
In practice
A tournament bracket: the championship slot is the root; every entrant starts at a leaf.
Where people slip
No connection ever loops back — that single restriction is the whole definition doing its work.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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