A method for automatic adjustment of ensemble size in stream data mining

Lena Pietruczuk, Leszek Rutkowski, Maciej Jaworski, Piotr Duda

Abstract: In recent years plenty of new algorithms for data stream classification were developed. The occurrence of different concept drift types in data streams turned out to be especially challenging. Much attention was paid to the ensemble methods because of their desired properties. However, the problem of deciding how many components should be stored in the ensemble is still an open issue. Therefore in this article we show a theoretically justified method of determining the proper ensemble size automatically. The performance of the proposed algorithm was experimentally tested and compared with other known methods.