Mutuality intensity represents the degree of approximation between givens…
相关强度表示了给定集合之间的接近程度;
The most important thing making use of DTM is to guarantee validity; the accuracy of DTM is degree of approximation of DTM'surface and actual terrain surface.
利用DTM最重要的是保证它的真实性,DTM精度是指数字地面模型与实际地形表面的逼近程度。
But this assumption does not hold to any reasonable degree of approximation in real societies.