---
title: "Describing Additive Fluents in Action Language C+"
authors:
  - "Joohyung Lee"
  - "Vladimir Lifschitz"
doi: ""
url: "https://ijcai.org/proceedings/2003/154"
pdf: "https://ijcai.org/proceedings/2003/0154.pdf"
venue: "Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence"
year: 2003
pages: "1079-1083"
track: ""
keywords:
---

# Describing Additive Fluents in Action Language C+

Joohyung Lee, Vladimir Lifschitz

*Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence*, pages 1079-1083.

## Abstract

An additive fluent is a fluent with numerical values such that the effect of several concurrently executed actions on it can be computed by adding the effects of the individual actions. We propose a method for describing effects of actions on additive fluents in the declarative language C+. An implementation of this language, called the Causal Calculator, can be used for the automation of examples of commonsense reasoning involving additive fluents.