在选取相似小城镇时，则是依据了模糊数学中的贴近度和择近原则进行。
Similar degree and similar selection in principle of fuzzy math are used in selection of similar towns.
对于人脸识别，本文选取了加权相似度的识别方法。
In this dissertation, the weighted similarity function is chosen as the identification method.
它以距离概念为基础，通过对贡献度的分析，检验相似系数或距离公式的选取是否恰当，分类数的选取是否为优。
By analyzing the degree of contribution, we can find whether the selection of Similarity Coefficient or Distance formula is suitable and whether the number of partition is optimal.
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