A Novel hybrid genetic algorithm for kernel function and parameter optimization in support vector regression

Authors:
Chih-Hung Wu;Gwo-Hshiung Tzeng;Rong-Ho Lin
Affiliations:
Department of Digital Content and Technology, National Taichung University No. 140, Ming-Shen Road, Taichung 40306, Taiwan;Department of Business Administration, Kainan University, No. 1, Kainan Road, Luchn, Taoyuan 338, Taiwan and Institute of Management of Technology, National Chiao Tung University, 100, Ta-Hsueh Ro ...;Department of Industrial Engineering & Management, National Taipei University of Technology, No. 1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan, ROC
Venue:
Expert Systems with Applications: An International Journal
Year:
2009

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Abstract

This study developed a novel model, HGA-SVR, for type of kernel function and kernel parameter value optimization in support vector regression (SVR), which is then applied to forecast the maximum electrical daily load. A novel hybrid genetic algorithm (HGA) was adapted to search for the optimal type of kernel function and kernel parameter values of SVR to increase the accuracy of SVR. The proposed model was tested at an electricity load forecasting competition announced on the EUNITE network. The results showed that the new HGA-SVR model outperforms the previous models. Specifically, the new HGA-SVR model can successfully identify the optimal type of kernel function and all the optimal values of the parameters of SVR with the lowest prediction error values in electricity load forecasting.