运用层次分析法对船舶建造进行了辅助的工程分解，运用聚类分析法对中间产品进行辅助分类。
Layer analysis method is used to do aided engineering decompose, and clustering analysis method is applied to aid classification for interim production.
现有的聚类分析算法可划分为：划分方法、层次的方法、基于密度的方法、基于网格的方法和基于模型的方法。
And the methods can be divided into portioning method, hierarchical method, density-based method, grid-based method and model-based method.
基于标准差和变异系数两个指标，采用聚类分析，可将土壤剖面水分垂直变化划分为四个层次：速变层、活跃层、次活跃层和相对稳定层。
Based on the standard deviation and variation coefficient, soil water change in the profile could be divided into four layers by cluster analysis.
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