Format

Send to

Choose Destination
Methods Inf Med. 1992 Jun;31(2):90-105.

Toward normative expert systems: Part I. The Pathfinder project.

Author information

1
Department of Computer Science, University of California, Los Angeles.

Abstract

Pathfinder is an expert system that assists surgical pathologists with the diagnosis of lymph-node diseases. The program is one of a growing number of normative expert systems that use probability and decision theory to acquire, represent, manipulate, and explain uncertain medical knowledge. In this article, we describe Pathfinder and our research in uncertain-reasoning paradigms that was stimulated by the development of the program. We discuss limitations with early decision-theoretic methods for reasoning under uncertainty and our initial attempts to use non-decision-theoretic methods. Then, we describe experimental and theoretical results that directed us to return to reasoning methods based in probability and decision theory.

PMID:
1635470
[Indexed for MEDLINE]

Supplemental Content

Loading ...
Support Center