Discrimination of the geographical origin of Codonopsis pilosula using near infrared diffuse reflection spectroscopy coupled with random forests and k-nearest neighbor methods

The combination of near infrared (NIR) spectroscopy with chemometrics provides an approach to study Codonopsis pilosula according to its geographical origin. Firstly, principle component analysis (PCA) was used to group samples based on their spectral differences. Random forests (RF) and k-nearest n...

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Veröffentlicht in:	Vibrational spectroscopy 2012-09, Vol.62, p.17-22
Hauptverfasser:	Li, Boxia, Wei, Yuhui, Duan, Haogang, Xi, Lili, Wu, Xinan
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemometrics Classification Codonopsis pilosula Forests Infrared k-Nearest neighbor Near infrared spectroscopy Origins Radio frequencies Random forests Spectra Spectroscopy Variable selection
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