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Improving Weighted Information Criterion By Using Optimization

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Date
2010
Author
Aladag, Cagdas Hakan
Egrioglu, Erol
Gunay, Suleyman
Basaran, Murat A.
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Abstract
Although artificial neural networks (ANN) have been widely used in forecasting time series, the determination of the best model is still a problem that has been studied a lot. Various approaches available in the literature have been proposed in order to select the best model for forecasting in ANN in recent years. One of these approaches is to use a model selection strategy based on the weighted information criterion (WIC). WIC is calculated by summing weighted different selection criteria which measure the forecasting accuracy of an ANN model in different ways. In the calculation of WIC, the weights of different selection criteria are determined heuristically. In this study, these weights are calculated by using optimization in order to obtain a more consistent criterion. Four real time series are analyzed in order to show the efficiency of the improved WIC. When the weights are determined based on the optimization, it is obviously seen that the improved WIC produces better results. (C) 2009 Elsevier B.V. All rights reserved.
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https://doi.org/10.1016/j.cam.2009.11.016
http://hdl.handle.net/11655/19556
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  • İstatistik Bölümü Makale Koleksiyonu [85]
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