The stability evaluation model of the mined-out areas was constructed by the grey correlation method to predict the situation of the mined-out areas according to gray related degree.
利用灰色关联法建立采空区稳定性评价模型，从而根据各因素的关联度进行评价预测。
A new TOPSIS model which based on the gray correlation coefficient matrix is presented in order to overcome the deficiency in more indicator of decision-making process.
以原始数据样本与理想方案之间的灰色关联系数矩阵为新的决策矩阵，利用理想解法对方案进行排序。
Based on the correlation method of gray system, the building of mathematical model and the steps of calculations for oil and gas pipelines are illustrated with example in this article.
根据灰色系统的关联分析方法，建立油气管道设计方案优选的模型与步骤。
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