采用最小距离方法逐步聚类分析，对理水调洪型植被群落分为高功能理水调洪型、一般功能理水调洪型、低功能理水调洪型、功能退化型4个等级。
The clustering analysis of least distance method was applied, the results showed that types of the phytocoenosium are 4: high function, commonly function, low function and degenerative function type.
计算从每个数据样例到群集中心(我们随意选中的数据行)的距离，使用距离计算的最小平方法。
Compute the distance from each data sample to the cluster center (our randomly selected data row), using the least-squares method of distance calculation.
基于最小分辨对比度准则，研究了天空背景下红外点目标的最大探测距离估计方法。
This paper investigates the approach to estimate the maximum detection range of an infrared point_target against sky background based on the minimum resolved contrast(MRC)criteria.
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