---
title: "Generating Causal Explanation from a Cardio-Vascular Simulation"
authors:
  - "Sarah A. Douglas"
  - "Zheng-Yang Liu"
doi: ""
url: "https://ijcai.org/proceedings/1989/79"
pdf: "https://ijcai.org/proceedings/1989/0079.pdf"
venue: "Proceedings of the Eleventh International Joint Conference on Artificial Intelligence"
year: 1989
pages: "489-495"
track: "Intelligent Tutoring Systems"
keywords:
---

# Generating Causal Explanation from a Cardio-Vascular Simulation

Sarah A. Douglas, Zheng-Yang Liu

*Proceedings of the Eleventh International Joint Conference on Artificial Intelligence*, pages 489-495.

## Abstract

In this paper, we present QUALEX, a system and algorithm for generating first-order qualitative causal graphs for tutorial purposes based on de Kleer and Brown's qualitative modeling theory. QUALEX is embedded in a constructive simulation environment called Heart Works which teaches hydraulics principles about the cardio-vascular system to first year college biology students.