将所得数据进行聚类分析,采用类间平均链锁法(Between-groups linkage),以夹角余弦(Cosine)作为样品相似性的测度,将16批灵芝药材分为2类,其中Ⅰ类为推荐品,Ⅱ类为非推荐品。
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... included angle cosine method 夹角余弦法 modified included angle 修正夹角 the included angle cosine 夹角余弦 ...
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针对基于向量夹角余弦准则下组合预测模型，研究它的基本结构特征。
In this paper, the basic structural characteristics of combination forecasting model is studied under the criterion of vectorial Angle cosine.
采用夹角余弦法计算相关系数，并使用SPSS11.0统计分析软件对指纹图谱进行系统聚类分析。
Correlative coefficient was computed using Cosine method. Hierarchical classification used SPSS11.0 statistical analysis software.
将HPLC指纹图谱看作多维空间内的向量，利用向量夹角余弦的基本公式计算两个指纹图谱间的相似度。
HPLC curves was treated as vector of hyperspace, the similarity between them was calculated by using the cosine value of the Angle between them.
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