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.
方法将色谱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；
METHODS Chromatogram can be treated as vector of hyperspace, and the similarity between them can be counted according to vectorial angle formula.
中药指纹图谱相似度的影响因素由样品所含的主要化学成分所引起 ，相关系数法比夹角余弦法对指纹图谱中小色谱峰变化的反应明显。
The important influence factors to TCMF are due to the difference of the main contents of TCM, the Cosin method is better for similarity evaluation than Correlation method.
特别地，能得到α角的余弦值，我们知道如何找两向量的夹角。
In particular,cosine of alpha,I can get, well, we know how to find the angle between two vectors.
由画法几何原理可知平面面积等于其正投影面积乘以该平面与投影面夹角的余弦。
According to principle of descriptive geometry, the area of plane equals projection of the plane divided by cosine between plane and projection of plane.
功率因数功率因数是电路中有功功率(w)视在功率(VA)间夹角的余弦值。
Power factor power factor is the cosine of the Angle between the active power (kW) and apparent power (kVA) in a circuit.
功率因数功率因数是电路中有功功率(w)视在功率(VA)间夹角的余弦值。
Power factor power factor is the cosine of the Angle between the active power (kW) and apparent power (kVA) in a circuit.
应用推荐