Figure 2
From: Origin identification of Chinese Maca using electronic nose coupled with GC-MS
Confusion matrix to evaluate the prediction accuracy of 293 Maca samples (a) and 239 samples after weighted treatment (b) of six cities. The classes are: 1, Xichang; 2, Chuxiong; 3, Dali; 4, Kunming; 5, Lijing; and 6, Shangri-La.
