关键词：灰色预测模型；收费公路权益；转让价格；收益现值法 [gap=5980]Key words：model of grey prediction；toll road management right；price transference；present earn—
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GM (1, 1) model of Grey System Theory is used in prediction realm.
在预测领域，灰色系统理论使用的是GM(1,1)模型。
Such as the return of specific prediction method, smoothing index, grey model prediction, BP neural network, RBF neural network .
具体如回归预测法、指数平滑法、灰色模型预测法、BP神经网络法、RBF神经网络法。
This paper inserts grey system, makes use of finite time series, follows GM (1, 1) building method, builds the long term prediction model of total waste -water in Heilongjiang Province.
本文引入灰色系统理论，利用有限的时间序列，按照GM(1,1)建模方法，建立起黑龙江省污水总量长期预测模型。
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