Atomic Representation: 

Each state of the world is a black box with no internal structure. E-g In Autonomous car – finding driving route from one destination to another.

Factored Representation:

Each state has a fixed set of variables or attributes that holds a value. E.g., GPS location, the quantity of gas in the car, etc.

Structured Representation:

States are explicitly expressed in the form of objects and relations between them

Practice the Intelligent Agent Quiz