Improving the accuracy of prediction of PM10 pollution by the wavelet transformation and an ensemble of neural predictors

Authors:
K. Siwek;S. Osowski
Affiliations:
Warsaw University of Technology, Warsaw, Poland;Warsaw University of Technology, Warsaw, Poland and Military University of Technology, Warsaw, Poland
Venue:
Engineering Applications of Artificial Intelligence
Year:
2012

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Abstract

The paper presents the application of wavelet transformation and neural network ensemble to the accurate forecasting of the daily average concentration of particulate matter of diameter up to 10@mm (PM"1"0). Few neural predictors are applied: the multilayer perceptron, radial basis function, Elman network and support vector machine as well as one linear ARX model. They are used for prediction in combination with wavelet decomposition, forming many individual prediction results that will be combined in an ensemble. The important role in presented approach fulfills the wavelet transformation and the integration of this ensemble. We have proposed solution applying the additional neural network responsible for the final forecast (integration of all particular prediction results). The numerical experiments for prediction of the daily concentration of the PM"1"0 pollution in Warsaw are presented. They have shown good overall accuracy of prediction in terms of all investigated measures of quality.