Answer:
An Intelligent Agent is an autonomous entity that perceives its environment through sensors and acts upon it through actuators to achieve goals.
Key concepts:
- Agent: A function mapping percepts to actions.
- Environment: The external world the agent interacts with.
- Percepts: The agent’s perception inputs.
- Actions: The outputs affecting the environment.
Types of environments:
- Fully/partially observable
- Deterministic/stochastic
- Episodic/sequential
- Static/dynamic
- Discrete/continuous
Rationality:
- A rational agent selects actions that maximize the expected performance measure based on its percept sequence and built-in knowledge.
Agent structure includes:
- Simple reflex agents – act only on the current percept.
- Model-based reflex agents – maintain internal state.
- Goal-based agents – act to achieve goals.
- Utility-based agents – maximize a utility function.
- Learning agents – improve performance with experience.