Accurate Determination of Geographical Origin of Tea Based on Terahertz Spectroscopy

doi:10.3390/app7020172

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 太赫兹技术研究中心

	Accurate Determination of Geographical Origin of Tea Based on Terahertz Spectroscopy
	Li, Mingliang; Dai, Guangbin; Chang, Tianying; Shi, Changcheng; Wei, Dongshan; Du, Chunlei; Cui, Hong-Liang
刊名	APPLIED SCIENCES-BASEL
	2017
卷号	7 期号:2
ISSN号	2076-3417
DOI	10.3390/app7020172
通讯作者	Chang, TY (reprint author), Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Jilin, Peoples R China. ; Chang, TY (reprint author), Chinese Acad Sci, Res Ctr Terahertz Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China.
英文摘要	This paper proposes a structured model for the identification of green tea, as well as tracing its geographical origins. Considering that the features of different types of green tea are similar under THz time-domain spectroscopy, we designed a program to perform principal component analysis (PCA) of the spectroscopic data of various green tea samples and to determine the data sequences of principal components. We then established a training set for the principal components to train a support vector machine (SVM) model via a genetic algorithm (GA). We used this model to optimize the parameters and develop a GA-based SVM model with an identification rate of 96.25% for the tested samples. Taken together, our results confirm that THz time-domain spectroscopy combined with GA-SVM can be effectively applied to rapidly identify types of green tea with different geographical origins.
URL标识	查看原文
语种	英语
WOS记录号	WOS:000395488900064
内容类型	期刊论文
源URL	[http://172.16.51.4:88/handle/2HOD01W0/254]
专题	太赫兹技术研究中心微纳制造与系统集成研究中心
作者单位	(1) Jilin Univ, Coll Instrumentat & Elect Engn, Changchun 130061, Jilin, Peoples R China; (2) Chinese Acad Sci, Res Ctr Terahertz Technol, Chongqing Key Lab Multiscale Mfg Technol, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Li, Mingliang,Dai, Guangbin,Chang, Tianying,et al. Accurate Determination of Geographical Origin of Tea Based on Terahertz Spectroscopy[J]. APPLIED SCIENCES-BASEL,2017,7(2).
APA	Li, Mingliang.,Dai, Guangbin.,Chang, Tianying.,Shi, Changcheng.,Wei, Dongshan.,...&Cui, Hong-Liang.(2017).Accurate Determination of Geographical Origin of Tea Based on Terahertz Spectroscopy.APPLIED SCIENCES-BASEL,7(2).
MLA	Li, Mingliang,et al."Accurate Determination of Geographical Origin of Tea Based on Terahertz Spectroscopy".APPLIED SCIENCES-BASEL 7.2(2017).