Ultraviolet-Visible Spectroscopy and Chemometric Strategy Enable the Classification and Detection of Expired Antimalarial Herbal Medicinal Product in Ghana

Figure 5

SVM class predicted probability for herbal medicinal products HMP1 (a), HMP2 (b), HMP3 (c), HMP4 (d), and HMP5 (e). HMP1—red circles, HMP2—purple squares, HMP3—green diamonds, HMP4—red pentagrams, and HMP5—blue triangles. Hollow and filled markers represent training and validation sets, respectively. The red dashed line represents the discrimination barrier above which samples are positively predicted as designated by the y-axis label.

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