Feature selection of autoregressive Neural Network inputs for trend Time Series Forecasting

Crone, Sven F. and Häger, Stephan (2016) Feature selection of autoregressive Neural Network inputs for trend Time Series Forecasting. In: 2016 International Joint Conference on Neural Networks, IJCNN 2016. Proceedings of the International Joint Conference on Neural Networks . Institute of Electrical and Electronics Engineers Inc., CAN, pp. 1515-1522. ISBN 9781509006199

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The capability of artificial Neural Networks to forecast time series with trends has been a topic of dispute. While selected research following Zhang and Qi has indicated that prior removal of trends is required for a Multilayer Perceptron (MLP), others provide evidence that Neural Networks are capable of forecasting trends without data preprocessing, either by choosing input-nodes employing an adequate autoregressive lag-structure of lagged realisations or by adding explanatory variables with trends. This paper proposes a novel variable selection methodology of autoregressive lags for trended time series with and without seasonality, and assesses its efficacy using the dataset of the International Time Series Forecasting Competition conducted at WCCI 2016. Our experiments indicate that MLPs are capable of forecasting different trend forms, but that more than a single lag-structure is required to do so, making the use of multiple input-lag variants and a robust model selection strategy necessary to achieve robust forecast accuracy.

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Publisher Copyright: © 2016 IEEE. Copyright: Copyright 2017 Elsevier B.V., All rights reserved.
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26 Oct 2022 11:50
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21 Nov 2022 17:41