Stock market forecasting model based on a hybrid ARMA and support vector machines
2008
Stock market forecasting has attracted a lot of research interests in previous literature. Traditionally, the autoregressive moving average (ARMA) model has been one of the most widely used linear models in time series forecasting. However, the ARMA model cannot easily capture the nonlinear patterns. And recent studies have shown that artificial neural networks (ANN) method achieved better performance than traditional statistical ones. ANN approaches have, however, suffered from difficulties with generalization, producing models that can overfit the data. Support vector machines (SVMs), a novel neural network technique, have been successfully applied in solving nonlinear regression estimation problems. Therefore, this investigation proposes a hybrid methodology that exploits the unique strength of the ARMA model and the SVMs model in the stock market forecasting problem in an attempt to provide a model with better explanatory power. Real data sets of stock market were used to examine the forecasting accuracy of the proposed model. The results of computational tests are very promising.
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