Identification of Official Rhubarb Samples Based on NIR Spectra and Neural Networks
TANG Yan-feng1, ZHANG Zhuo-yong1*, FAN Guo-qiang2
1. Department of Chemistry，MOE Key Lab for 3-D Information Acquisition and Application, Capital Normal University, Beijing 100037, China 2. Scientific Research Institute, Beijing Tongrentang Co. Ltd., Beijing 100011, China
Abstract：Rhubarb is one of the most widely used Chinese medicinal herbs in China. Fast and accurate identification of official and unofficial rhubarb samples is most critical for quality control of Chinese medicine production. In the present paper near-infrared reflectance spectrometry (NIRS) and artificial neural network (ANN) were combined to develop classification models for identifying 52 official and unofficial rhubarb samples. The measured spectra were compressed by wavelet transformation (WT) and then the ANN classification models were trained with the reduced-variables spectral data. The rate of correct classification was over 96%. The effects of neurons in hidden layer and the momentum were also discussed. Owing to its fast and nondestructive properties, NIRS is a promising approach to identifying Chinese medicinal herbs.
Key words：Near infrared spectrometry;Rhubarb;Neural network;Chinese herbal medicine
汤彦丰1，张卓勇1*，范国强2 . 中草药大黄的近红外光谱和人工神经网络鉴别研究[J]. 光谱学与光谱分析, 2004, 24(11): 1348-1351.
TANG Yan-feng1, ZHANG Zhuo-yong1*, FAN Guo-qiang2 . Identification of Official Rhubarb Samples Based on NIR Spectra and Neural Networks . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1348-1351.
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