HPLC curves was treated as vector of hyperspace, the similarity between them was calculated by using the cosine value of the Angle between them.
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。
A practicable solution to the angle-digital conversion of synchro is provided, which includes cut section coding for the ratio of sine to cosine and sampling on double peak value.
针对自整角机的轴角数字转换，提出了分区间正余弦信号相比较编码和双峰值采样的方法。
Aimed at the limitations of available approach for case class retrieval, a new similitude cosine two-value approach was proposed for case class retrieval.
针对实例类检索的子空间法的不足，提出了实例分类检索的相似余弦二值法。
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