本文利用灰色系统理论中的关联度概念，从几何处理的角度，提出一种新方法。
From the point of view of geometry, the new method is proposed by using the concept of relational grade in grey system theory.
给出关联空间及其绝对关联度的概念，在此基础上，提出一种保持平移变换不变的绝对关联度计算公式。
On the basis of these conceptions, we advance the computational formula of the absolute incidence degree, which keep invariant of translational transformation, and give a computation example at last.
本文从关联度的概念出发，提出了一种灰色模型的选取方法，经过实例验证，证明行之有效，从而克服了选取预测模型的盲目性。
Starting with the relation degree, this paper has presented a method for selecting a grey model, which could best fit the oil and gas field.
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