National Changhua University of Education Institutional Repository : Item 987654321/1868
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题名: Integrating GA-based Time-scale Feature Extractions with SVMs for Stock Index Forecasting
作者: Shian-Chang Huanga;Tung-Kuang Wub
贡献者: 企業管理學系
关键词: Hybrid forecasting
Support vector machine
Wavelet analysis
Genetic algorithm
Time series forecasting
日期: 2008-11
上传时间: 2010-11-15T07:47:22Z
摘要: By integrating genetic algorithm (GA)-based optimal time-scale feature extractions with support vector machines (SVM), this study develops a novel hybrid prediction model that operates for multiple time-scale resolutions and utilizes a flexible nonparametric regressor to predict future evolutions of various stock indices. The time series of explanatory variables are decomposed using wavelet bases, and a GA is employed to extract optimal time-scale feature subsets from decomposed features. These extracted time-scale feature subsets then serve as an input for an SVM model that performs final forecasting. Compared with neural networks, pure SVMs or traditional GARCH models, the proposed model performs best. The root-mean-squared forecasting errors are significantly reduced.
關聯: Expert Systems with Applications, 35(4):2080-2088
显示于类别:[企業管理學系] 期刊論文

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