Detection of Adulteration of Panax Notoginseng Powder by Terahertz Technology

Figure 8

Scatter diagram of LS-SVM prediction model; (a) is scatter diagram of adulterating with zedoary turmeric powder; (b) is scatter diagram of adulterating with rice flour; (c) is scatter diagram of adulterating with wheat flour.

(a)

(b)

(c)