By a practical example, the set-pair method is good for forecasting coal-gas emerging, and it is a convenient and reasonable method of analyzing gray system.
实例表明，集对分析方法能够较好地预测煤与瓦斯突出的可能性，是预测灰色系统的一种方便、合理的方法。
The forecasting of irrigation water use is influenced by many factors and it belongs to the gray system.
灌溉用水量的预测影响因素很多，属于灰色系统问题。
This paper described the gray system theory and the most common used gray forecasting model-GM(1,1) forecasting model (static GM(1,1) forecasting model).
本文详细阐述了灰色系统理论及最常用的灰色预测模型——GM（1，1）预测模型（静态GM（1，1）预测模型）。
The research trend of cost forecasting based on gray system is put forwarded.
对建设工程造价灰色预测问题进一步的研究方向进行了展望。
In this paper, by using the gray system theory and the dynamic BP neural network, the combination forecasting model are discussed.
对时间序列的一类预测模型进行了研究，把灰色模型与BP神经网络模型组合建模，通过实例分析取得好的效果。
In this paper, by using the gray system theory and the dynamic BP neural network, the combination forecasting model are discussed.
对时间序列的一类预测模型进行了研究，把灰色模型与BP神经网络模型组合建模，通过实例分析取得好的效果。
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