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Review
. 1995 Mar-Apr;2(2):85-93.
doi: 10.1136/jamia.1995.95261910.

Are normative expert systems appropriate for diagnostic pathology?

Affiliations
Review

Are normative expert systems appropriate for diagnostic pathology?

L W Diamond et al. J Am Med Inform Assoc. 1995 Mar-Apr.

Abstract

Conceptual models for diagnostic reasoning proposed in the medical literature are presented to stimulate discussion about the issue of the appropriateness of probabilistic knowledge-based systems for medical diagnosis. Evidence is presented to corroborate the authors' view that diagnosis is a problem-solving task, rather than a decision-making task. In the authors' opinion, probabilistic reasoning is better suited to situations dealing with choices for clinical intervention, rather than to those dealing with determining the correct diagnosis. A critique is given of a diagnostic Bayesian expert system for lymph node pathology. In empirical studies, diagnostic Bayesian systems have been shown to typically list the correct diagnosis as the program's first choice 60% to 70% of the time. One reason for this undistinguished level of diagnostic performance is that Bayesian systems are not designed to represent and use knowledge the same way that an expert does.

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