Nonlinear Time Series Forecast Using Radial Basis Function Neural Networks |
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Authors: | ZHENG Xin and CHEN Tian-Lun |
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Affiliation: | Institute of Physics, Nankai University, Tianjin 300071, China |
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Abstract: | In the research of using Radial BasisFunction Neural Network (RBF NN) forecasting nonlinear time series, we investigate how the different clusterings affect the process of learning and forecasting. Wefind that k-means clustering is very suitable. In order to increase the precision we introduce a nonlinear feedback term to escape from the local minima of energy, then we use the model to forecast the nonlinear time series which are produced by Mackey-Glass equation and stocks. By selecting the k-means clustering and the suitable feedback term, much betterforecasting results are obtained. |
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Keywords: | neural network nonlinear time series clustering |
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