Summary: Learning = Search
Target function = concept “edible mushroom”
- Represent function as decision tree
- Equivalent to propositional logic in DNF
Construct approx. to target function via search
- Nodes: decision trees
- Arcs: elaborate a DT (making bigger + better)
- Initial State: simplest possible DT (I.e. a leaf)
- Heuristic: Information gain
- Goal: No improvement possible ...
- Search Method: hill climbing