摘要
With the traditional Chinese medicine herbs angelicae dahuricae radix (ADR or Baizhi) and salviae miltiorrhizae radix (SMR or Danshen) as two examples, this work studies the automatic discrimination of the geographic origins of the herbs using near infrared (NIR) reflectance spectroscopy. Multi-class support vector machine (SVM) is utilized for the purpose, and recursive SVM is utilized to select the feature spectral segments that are decisive for the discrimination. With only 5 and 8 short spectral segments, discriminative accuracies of 92% are achieved on independ- ent test sample sets. This work not only provides a prototype of accurate rapid discriminating systems for quality control of herbal medicines, but also opens new possibilities in studying subtle differences in the chemical compositions of herbs from different cultivation conditions and investigating their associations with the effectiveness of the herbs.
With the traditional Chinese medicine herbs angelicae dahuricae radix (ADR orBaizhi) and salviae miltiorrhizae radix (SMR or Danshen) as two examples, this work studies theautomatic discrimination of the geographic origins of the herbs using near infrared (NIR)reflectance spectroscopy. Multi-class support vector machine (SVM) is utilized for the purpose, andrecursive SVM is utilized to select the feature spectral segments that are decisive for thediscrimination. With only 5 and 8 short spectral segments, discriminative accuracies of 92 percentare achieved on independent test sample sets. This work not only provides a prototype of accuraterapid discriminating systems for quality control of herbal medicines, but also opens newpossibilities in studying subtle differences in the chemical compositions of herbs from differentcultivation conditions and investigating their associations with the effectiveness of the herbs.
基金
This work was supported by the National Natural Sciences Foundation of China(Grant No.60275007)
China National Administative Bureau of Traditional Chinese Medicine Key Project(2001ZDZX01)
the National Basic Research Program of China Project(2003CB517106).
关键词
特征选择
特征识别
中草药
近红外线光谱学分析
识别模式
支持向量机
traditional Chinese medicine
discrimination of geographic origin
nearinfrared
pattern recognition
feature selection
support vector machine