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高速公路交通量预测的GM(1,1)残差改进模型

Keywords: 交通工程,交通量预测,灰色系统,GM(1,1)残差改进模型

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Abstract:

针对传统GM(1,1)模型在预测高速公路交通量中存在误差过大、计算复杂的问题,通过定义残差序列,对预测序列与残差序列进行累加再处理,构造新的序列数据;并且对新序列数据构造GM(1,1)残差改进模型,以进行预测。模型应用于某高速公路某收费站,对9期序列数据进行了模拟预测。结果表明,GM(1,1)残差改进模型的平均预测误差为7.25%,优于传统GM(1,1)模型预测的平均相对误差12.7%。

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