Rationality:
- Rationality is nothing but status of being reasonable, sensible, and having good sense of judgment.
- Rationality implies the conformity of one’s beliefs with one’s reasons to believe, or of one’s actions with one’s reasons for action.
- It is concerned with expected actions and results depending upon what the agent has perceived.
- Performing actions with the aim of obtaining useful information is an important part of rationality.
Rational Agent:
- A rational agent is an agent which has clear preferences and models uncertainty via expected values.
- A rational agent can be anything that makes decisions, typically a person, firm, machine, or software.
- A rational agent always performs right action, where the right action means the action that causes the agent to be most successful in the given percept sequence.
- Rational agent is capable of taking best possible action in any situation.
Example of rational action performed by any intelligent agent:
Automated Taxi Driver:
Performance Measure: Safe, fast, legal, comfortable trip, maximize profits.
Environment: Roads, other traffic, customers.
Actuators: Steering wheel, accelerator, brake, signal, horn.
Sensors: Cameras, sonar, speedometer, GPS, odometer, engine sensors, keyboard.