multicriteria decision aid; aide décisionnelle multicritères; classification; classification; Fuzzy sets; ensembles flous; Fuzzy binary relations; relations binaires floues; scoring function; fonction de score; astrocytic tumour; astrocytome; medical diagnosis; diagnostic médical
In this paper we introduce a new classification procedure for assigning objects to predefined classes, named <em>PROCFTN</em>. This procedure is based on a fuzzy scoring function for choosing a subset of prototypes, which represent the closest resemblance with an object to be assigned. It then applies the majority-voting rule to assign an object to a class. We also present a medical application of this procedure as an aid to assist the diagnosis of central nervous system tumours. The results are compared with those obtained by other classification methods, reported on the same data set, including decision tree, production rules, neural network, <em>k</em>-nearest neighbour, multilayer perceptron and logistic regression. Our results are very encouraging and show that the multicriteria decision analysis approach can be successfully used to help medical diagnosis.