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Dipartimento di Elettronica, Informatica e Sistemistica

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Adaptive Voting Rules fo k-NN Classifiers

R. Rovatti and R. Ragazzoni and Zs. M. Kovacs and R. Guerrieri


A simple form of cooperation between the k-Nearest Neighbors approach to classification and the neural-like property of adaptation is explored. A tunable, high level k-Nearest Neighbors decision rule is defined which comprehends most previous generalizations of the common majority rule. A learning procedure is developed which applies to this rule and exploits those statistical features that can be induced from the training set. The overall approach is tested on a problem of handwritten character recognition. Performance measurements show that adaptivity in the decision rule may greatly improve the recognition ability of standard k-NN classifiers.

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