Abstract
Nowadays simple methods of data analysis are not sufficient for efficient management of an average enterprize, since for smart decisions the knowledge hidden in data is highly required, among them methods of collective decision making called classifier ensemble are the focus of intense research. Unfortunately the great disadvantage of traditional classification methods is that they ”assume” that statistical properties of the discovered concept (which model is predicted) are being unchanged. In real situation we could observe so-called concept drift, which could be caused by changes in the probabilities of classes or/and conditional probability distributions of classes. The paper presents extension of Weighted Aging Classifier Ensemble (WAE), which is able to adapt to the changes in data stream. It assumes that the classified data stream is given in a form of data chunks, and the concept drift could appear in the incoming data chunks. Instead of drift detection WAE tries to construct self-adapting classifier ensemble. Therefore on the basis of the each chunk one individual is trained and WAE checks if it could form valuable ensemble with the previously trained models. The presented extension uses the ensemble of heterogeneous classifiers, what boosts the classification accuracy, what was confirmed on the basis of the computer experiments.
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Woźniak, M., Cal, P. (2013). Weighed Aging Ensemble of Heterogenous Classifiers for Incremental Drift Classification. In: Castro, F., Gelbukh, A., González, M. (eds) Advances in Soft Computing and Its Applications. MICAI 2013. Lecture Notes in Computer Science(), vol 8266. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-45111-9_23
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DOI: https://doi.org/10.1007/978-3-642-45111-9_23
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