Basics and History

Question 1

What are the four categories of AI?

Answer 1

• Thinking humanly
• Acting humanly
• Thinking rationally
• Actiong rationally

Question 2

What does it mean to act rationally?

Answer 2

Doing the “right” thing regardless of personal stake

Maximize the goal given the situatuon

Question 3

What is an Intelligent Agent?

Answer 3

They percieve their environment through sensors and act with actuators. An agent is essentially an architecture + a program

Question 4

What are the PEAS measures?

Answer 4

• Performance: how should the agent perform (specs)
• Environment: where will the agent be operating?
• Actuators: how can the agent interact?
• Sensors: how can the agent sense?

Question 5

Briefly describe the different environment types.

Answer 5

• Fully observable: Sensors give full information
• Deterministic: The next state is completely determined
  by the current state
• Stochastic: The inverse
• Episodic: Experience is divided into episodes, action
  depends only on current episode
• Sequential: The inverse
• Static: Environment is unchanged
• Discrete: Limited number of clearly defined actions
• Single agent: operates by itself

Question 6

Briefly describe the different types of agents.

Answer 6

• Table-lookup: Check a table for possible actions each
  time
• Simple reflex: Do something, see what happens, do
  something else
• Model-based: Same as above, but has a predefined
  model which alters actions after observations
• Goal-based: Only considers its goal, tries to reach as
  efficiently as possible
• Utility-based: Same as above, but considers other -
  goals (how happy will I be in a certain state)
• Learning agents: Measures its own performance, and
  alters behavior based on that