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基于遗传算法优选参数的灰色LS-SVM预测 Grey LS-SVM Forecasting with Parameter Optimized by Genetic Algorithm

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Author(s): 周德强

Journal: Operations Research and Fuzziology
ISSN 2163-1476

Volume: 01;
Issue: 02;
Start page: 29;
Date: 2011;
Original page

Keywords: 灰色LS-SVM;GM(1 | 1)模型;遗传算法;参数优选;小样本预测 | Grey Least Square Support Vector Machines; GM (1 | 1) Model; Genetic Algorithms; Parameter Selection; Small Samples Forecasting

ABSTRACT
利用灰色预测方法中累加生成运算形成累加数据,将累加数据作为训练样本构造灰色LS-SVM,并利用遗传算法对灰色LS-SVM自身的参数进行优选,然后将基于遗传算法优选参数的灰色LS-SVM用于小样本预测。选取了典型例子进行验证,并与传统GM(1, 1)和LS-SVM方法进行对比。结果表明本文所提出的方法预测效果良好,且预测模型具有更好的泛化能力。This paper utilized the accumulation generation operation of grey prediction to produce accumulated data, and accumulated data were used to construct grey LS-SVM. At the same time the parameters for LS-SVM were pretreated through genetic algorithms to get the optimum parameter values, then the optimized LS-SVM based on genetic algorithms was used to small samples forecasting. A typical example was taken to be analyzed and compared with GM (1, 1) and LS-SVM method. The result shows that the method forecast effect is better, and the prediction model has better generalization ability.
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