摘要
提出和实现了一种新的计算中药指纹图谱相似度的方法;算法在对中药指纹图谱全谱计算夹角余弦系数的基础上,对指纹图谱的特征峰计算共有峰的折线重合率,经过加权重计算而得到更为准确的指纹图谱相似度值;文中提出的方法具有兼顾全局匹配和局部比较的优点,在算法实现具有简单易于编程的特点,而且计算结果更加接近实际情况,因而具有很强的实用性;最后对三组田基黄中药样本的指纹图谱原始信号和校正后的信号采用文中方法计算相似度,实验结果表明了该方法的可行性和优越性。
A new method to calculate the similarity of Chinese traditional medicine fingerprint is put forward and proved, Firstly the basis of similarity is accounted by angle of cosines, then the overlap rate of curve made by relative area or common peaks of fingerprint is got, finally combining the two coefficients to calculate similarity of fingerprint. The calculated similarity with the proposed method can express the global similarity of fingerprint and the special common peaks of fingerprint. And this method is simple to be coded. In the experiment result, three real--life samples are compared by this method, the results can show the improvement of the similarity degree of the Chinese traditional medicine fingerprint.
出处
《计算机测量与控制》
CSCD
2007年第10期1376-1378,共3页
Computer Measurement &Control
基金
广东省广州市科技攻关项目(2004Z3-E5011)
关键词
中药指纹图谱
夹角余弦
折线重合率
相似度
Chinese medicine fingerprint, angle of cosines
overlap rate of curve
similarity
