【摘要】 分别以原始数据的一次累加生成序列中的每个数据作为初始条件,建立了多个GM(1,1)预测模型,进一步建立了线性组合预测模型,组合模型的权系数利用蚁群算法确定.最后给出了我国人口数量的组合预测模型,计算结果表明,灰色组合预测模型的拟合和预测精度要优于单个传统预测模型.更多还原

【Abstract】 From the building mechanism of grey model,the GM(1,1)prediction models are built separately. Using those models,the linear combination gray GM(1,1)model is presented and weight coefficients are obtained by ant colony algorithm. Population combination forecast model is established. The result indicate that the precision of combination prediction model is higher than any one model in terms of fit and predictionthe and this model is proved to be precise and reliableis.更多还原