A nonlinear combined forecasting model based on DE-SVM is presented to improve the accuracy of forecasting,where optimal rule is the least sum of square error of the combined forecasting model,and the parameters of SVM are optimized by using DE,and the results of each forecasting model are forecasted by using SVM.The simulation results show that DE-SVM can synthesize important forecasting information of each forecasting model. Its forecasting error is obviously less than that of each model. The accuracy of forecasting will be higher and practicality of the model will be stronger.%为提高预测精度,提出DE-SVM非线性组合预测模型.以组合预测模型的误差平方和最小为优化准则,用差分进化算法(DE)对支持向量机参数进行优化,并利用支持向量机对单一模型的预测结果进行组合预测.算例结果表明,DE-SVM综合利用了各单个预测模型的重要预测信息,其预测误差远远小于各单个模型的预测误差,其预测精度更高,模型的实用性更强.
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