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Paper details
Number 1 - March 2024
Volume 34 - 2024
An empirical study of a simple incremental classifier based on vector quantization and adaptive resonance theory
Sylwester Czmil, Jacek Kluska, Anna Czmil
Abstract
When constructing a new data classification algorithm, relevant quality indices such as classification accuracy (ACC) or
the area under the receiver operating characteristic curve (AUC) should be investigated. End-users of these algorithms
are interested in high values of the metrics as well as the proposed algorithm’s understandability and transparency. In
this paper, a simple evolving vector quantization (SEVQ) algorithm is proposed, which is a novel supervised incremental
learning classifier. Algorithms from the family of adaptive resonance theory and learning vector quantization inspired this
method. Classifier performance was tested on 36 data sets and compared with 10 traditional and 15 incremental algorithms.
SEVQ scored very well, especially among incremental algorithms, and it was found to be the best incremental classifier if
the quality criterion is the AUC. The Scott–Knott analysis showed that SEVQ is comparable in performance to traditional
algorithms and the leading group of incremental algorithms. The Wilcoxon rank test confirmed the reliability of the obtained
results. This article shows that it is possible to obtain outstanding classification quality metrics while keeping the conceptual
and computational simplicity of the classification algorithm.
Keywords
incremental learning, data classification, vector quantization, adaptive resonance theory, classification performance