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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Rough Sets and Medical Differential Diagnosis
verfasst von : Shusaku Tsumoto
Erschienen in: Rough Sets and Intelligent Systems - Professor Zdzisław Pawlak in Memoriam
Verlag: Springer Berlin Heidelberg
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This chapter discusses a correspondence between the core ideas of rough sets and medical differential diagnosis. Classically, a disease is defined as a set of symptoms, each of which gives the degree of confidence and coverage for the diagnosis. Diagnostic procedure mainly consists of the following three procedures: First, focusing mechanism (characterization) selects the candidates of differential diagnosis by using a set of symptoms. Secondly, additional set of symptoms make a differential diagnosis among the selected candidates. Finally, complications of other disease will be considered by symptoms which cannot be explained by the final candidates. This chapter mainly focuses on the first and second process and shows that these processes correspond to rules extracted by upper and lower approximation of supporting set of a given disease.