Toward Normative Expert Systems: The Pathfinder Project

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Citation: David Heckerman and Eric Horvitz and Bharat N. Nathwani. (1990) Toward Normative Expert Systems: The Pathfinder Project. In KSL-90-08, February,1990.

Publication techreport ( Edit )
type Technical Report
bibtype techreport
Bibtex basics
author David Heckerman and Eric Horvitz and Bharat N. Nathwani
title Toward Normative Expert Systems: The Pathfinder Project
number KSL-90-08
institution Knowledge Systems, AI Laboratory
year 1990
month February
Bibtex more
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abstract We describe key issues and achievements on the Pathfinder expert-system project. Pathfinder research has extended over 5 years at the University of Southern California and at Stanford University. Our investigation of automated reasoning has spanned several paradigms for representing and reasoning with expert medical knowledge. The Pathfinder team has concentrated on the construction of normative expert systems, which are expert systems based on the principles of decision theory. Within the normative paradigm, we have developed useful techniques for acquiring, representing, manipulating, and explaining complex medical knowledge. A large component of such knowledge is made available only through careful assessment of subjective probabilistic relationships. Although the bulk of Pathfinder research has been carried out within the domain of lymph-node pathology, the insights and techniques have relevance to a wide variety of complex biomedical domains. We introduce the project, describe the significance of normative reasoning in medicine, and review theoretical and empirical Pathfinder developments. We describe the techniques for constructing and managing a large probabilistic knowledge base, the use of a normative hypothetico-deductive architecture, the application of alternative information-acquisition strategies, the explanation of probabilistic inference, and the heuristic and normative evaluation of the Pathfinder reasoning system.

KSL Technical Report ID: KSL-90-08
Facts about Toward Normative Expert Systems: The Pathfinder ProjectRDF feed
Abstract We describe key issues and achievements on … We describe key issues and achievements on the Pathfinder expert-system project. Pathfinder research has extended over 5 years at the University of Southern California and at Stanford University. Our investigation of automated reasoning has spanned several paradigms for representing and reasoning with expert medical knowledge. The Pathfinder team has concentrated on the construction of normative expert systems, which are expert systems based on the principles of decision theory. Within the normative paradigm, we have developed useful techniques for acquiring, representing, manipulating, and explaining complex medical knowledge. A large component of such knowledge is made available only through careful assessment of subjective probabilistic relationships. Although the bulk of Pathfinder research has been carried out within the domain of lymph-node pathology, the insights and techniques have relevance to a wide variety of complex biomedical domains. We introduce the project, describe the significance of normative reasoning in medicine, and review theoretical and empirical Pathfinder developments. We describe the techniques for constructing and managing a large probabilistic knowledge base, the use of a normative hypothetico-deductive architecture, the application of alternative information-acquisition strategies, the explanation of probabilistic inference, and the heuristic and normative evaluation of the Pathfinder reasoning system. uation of the Pathfinder reasoning system.
Author David Heckerman and Eric Horvitz and Bharat N. Nathwani  +
Bibtype techreport  +
Has author David Heckerman and Eric Horvitz and Bharat N. Nathwani  +
Has identifier KSL-90-08  +
Has publishing details February,1990  +
Has title Toward Normative Expert Systems: The Pathfinder Project  +
Has where published KSL-90-08  +
Has year 1990  +
Institution Knowledge Systems, AI Laboratory  +
Ksl tr id KSL-90-08  +
Month February  +
Number KSL-90-08  +
Process note NO  +
Title Toward Normative Expert Systems: The Pathfinder Project  +
Year 1990  +
Retrieved from "http://tw.rpi.edu/wiki/Toward_Normative_Expert_Systems:_The_Pathfinder_Project"
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