---
title: "Goal Change"
authors:
  - "Steven Shapiro"
  - "Yves Lespérance"
  - "Hector J. Levesque"
doi: ""
url: "https://ijcai.org/proceedings/2005/130"
pdf: "https://ijcai.org/proceedings/2005/0130.pdf"
venue: "Proceedings of the Nineteenth International Joint Conference on Artificial Intelligence"
year: 2005
pages: "582-587"
track: ""
keywords:
---

# Goal Change

Steven Shapiro, Yves Lespérance, Hector J. Levesque

*Proceedings of the Nineteenth International Joint Conference on Artificial Intelligence*, pages 582-587.

## Abstract

Although there has been much discussion of belief change (e.g., [G ̈ardenfors, 1988; Spohn, 1988]), goal change has not received much attention. In this paper, we propose a method for goal change in the framework of Reiter’s [2001] theory of action in the situation calculus [McCarthy and Hayes, 1969; Levesque et al., 1998], and investigate its properties. We extend the framework developed by Shapiro et al. [1998] and Shapiro and Lesp ́erance [2001], where goals and goal expansion were modelled, but goal contraction was not.