---
title: "The Design and an Example Use of Hearsay-III"
authors:
  - "Lee D. Erman"
  - "Philip London"
  - "Stephen Fickas"
doi: ""
url: "https://ijcai.org/proceedings/1981/79"
pdf: "https://ijcai.org/proceedings/1981/0079.pdf"
venue: "Proceedings of the Seventh International Joint Conference on Artificial Intelligence"
year: 1981
pages: "409-414"
track: "Natural Language Applications"
keywords:
---

# The Design and an Example Use of Hearsay-III

Lee D. Erman, Philip London, Stephen Fickas

*Proceedings of the Seventh International Joint Conference on Artificial Intelligence*, pages 409-414.

## Abstract

Hearsay-Ill provides a framework for constructing kn owledge-based expert systems . While Hearsay· Ill makes no commitment to any particular application domain, it does supply a variety of generally applicable facilities . These include representation primitives and an interpreter for large-grained, flexibly schedulable production rules called knowledge sources. A detailed overview of the motivations behind Hearsay-Ill and the facilities it provides are presented . Finally, an application of Hearsay-Ill is described .