相似度的评价指标相关系数的改进

相似度的评价指标相关系数的改进

刘永锁, 孟庆华, 陈蓉, 王健松, 蒋淑敏, 胡育筑^*

中国药科大学分析化学教研室, 江苏南京 210009

收稿日期:2004-01-20 修回日期:2004-08-10 出版日期:2004-09-15 发布日期:2004-09-15
通讯作者: 胡育筑*

Improvement of Similarity Measure: Pearson Product-Moment Correlation Coefficient

LIU Yong-suo, MENG Qing-hua, CHEN Rong, WANG Jian-song, JIANG Shu-min, HU Yu-zhu^*

Department of Analytical Chemistry, China Pharmaceutical University, Nanjing 210009, China

Received:2004-01-20 Revised:2004-08-10 Online:2004-09-15 Published:2004-09-15
Contact: HU Yu-zhu*

摘要/Abstract

摘要： 目的　研究相似度的评价指标: 相关系数的灵敏度低的原因及其改进的方法。方法　利用实验数据和模拟数据研究相关系数的灵敏度低的问题。结果　相关系数的灵敏度受数据的分布范围的影响, 在数据的分布范围宽时加权相关系数更灵敏。结论　在数据的分布范围宽时有必要进行加权运算。

关键词: 色谱指纹图谱, 色谱指纹图谱, 色谱指纹图谱, 相似度, 相似度, 相似度, 质量控制, 质量控制, 质量控制, 加权相关系数, 加权相关系数, 加权相关系数

Abstract:

Aim To study the reason of the insensitiveness of Pearson product-moment correlation coefficient as a similarity measure and the method to improve its sensitivity. Methods Experimental and simulated data sets were used. Results The distribution range of the data sets influences the sensitivity of Pearson product-moment correlation coefficient. Weighted Pearson product-moment correlation coefficient is more sensitive when the range of the data set is large. Conclusion Weighted Pearson product-moment correlation coefficient is necessary when the range of the data set is large.

Key words:

chromatographic fingerprints,

chromatographic fingerprints, similarity, similarity, quality control, quality control, weighted Pearson product-moment correlation coefficient

, weighted Pearson product-moment correlation coefficient

中图分类号:

R911.1

R91701

Supporting: ^*Corresponding author. Tel.: 86-25-83271280; fax: 86-25-85391161

刘永锁, 孟庆华, 陈蓉, 王健松, 蒋淑敏, 胡育筑^*. 相似度的评价指标相关系数的改进[J]. .

LIU Yong-suo, MENG Qing-hua, CHEN Rong, WANG Jian-song, JIANG Shu-min, HU Yu-zhu^*. Improvement of Similarity Measure: Pearson Product-Moment Correlation Coefficient[J]. .

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