The vetorial angle method is employed to evaluate the validness of every drill-down operation.
本文采用向量夹角法评估下钻操作的有效性,并给出了对应的高效下钻路径裁剪算法。
参考来源 - OLAP分析中一种有效的下钻路径裁减技术 in C·2,447,543篇论文数据，部分数据来源于NoteExpress
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.
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.
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.
应用推荐