ERIC Number: ED266178
Record Type: Non-Journal
Publication Date: 1985-Aug
Reference Count: N/A
Acquiring, Representing, and Evaluating a Competence Model of Diagnostic Strategy.
Clancey, William J.
This paper describes NEOMYCIN, a computer program that models one physician's diagnostic reasoning within a limited area of medicine. NEOMYCIN's knowledge base and reasoning procedure constitute a model of how human knowledge is organized and how it is used in diagnosis. The hypothesis is tested that such a procedure can be used to simulate both expert problem-solving behavior and a good teacher's explanations of reasoning. The paper is divided into four major sections: (1) acquiring the model by protocol analysis, using a framework that separates an expert's causal explanations of evidence from his descriptions of knowledge relations and strategies; (2) overview of the diagnostic model; (3) representing the model, including strategy and domain knowledge; and (4) evaluating the model for sufficiency and plausibility by testing it in different settings requiring expertise. NEOMYCIN's diagnostic procedure is discussed in detail, as a memory aid, as a set of operators, as proceduralized constraints, and as a grammar. (Author/LMO)
Publication Type: Reports - Descriptive; Reports - Evaluative
Education Level: N/A
Sponsor: Office of Naval Research, Arlington, VA. Personnel and Training Research Programs Office.; Josiah Macy, Jr. Foundation, New York, NY.
Authoring Institution: Stanford Univ., CA. Dept. of Computer Science.