CHAPTER 11

The Mental States of Agents

Many instances of commonsense reasoning involve the mental states of agents. An agent is an entity that performs purposeful actions in the world in which it exists. Examples of agents are people, animals, organizations, robots, and computer programs. In order to represent and reason about agent behavior—in particular, to interpret an agent’s actions and make predictions about an agent’s future actions—we must model the mental states of agents. In this chapter we first address agent behavior, which requires the modeling of beliefs, goals, and plans. Then, we discuss the modeling of emotions.

11.1 Beliefs, Goals, and Plans

Agent behavior can be reactive or goal-driven.

11.1.1 Reactive Behavior

Consider ...

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