RESUMO
Lack of standardization in estimating the quality of diagnostic systems provides many possibilities in developing new methodologies. The paper deals with general method for determination of effectiveness of diagnostic systems in non-invasive diagnostics of thyroid. The result of presented methodology is a single number, which clearly depicts the quality of such a system with no need for further analysis. Together with the general design of such a system an overview of characteristics of a diagnostic system is described.
RESUMO
In this paper a fuzzy model of inexact reasoning in medicine is developed. Both diagnosis and choice of therapy are considered. In the context of diagnosis a model used as the mathematical basis of MYCIN is given in a fuzzy interpretation. Single combining functions are identified with basic fuzzy operations and principles. In choosing therapy, the approach adopted in MYCIN formalized in fuzzy set terminology. A modified model of therapy selection is developed based upon the certainty factors of possible significant organisms' identities.
