Chapter 4

The Triggering of Events

Abstract

We discuss the representation of triggered events in the event calculus. A triggered event is an event that occurs when a particular condition becomes true. An example of a triggered event is a ball bouncing off of a wall when it reaches the wall. We also discuss triggered fluents.

Keywords

Commonsense reasoning

Event calculus

Reasoning about action and change

Triggered events

Natural actions

Triggered fluents

So far, we have addressed that when an event occurs, a fluent changes its truth value. What about the opposite? That is, when a fluent changes its truth value, an event occurs; more generally, when a particular condition becomes true, an event occurs. We call such an event a triggered event ...

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