Random Forest in Clinical Metabolomics for Phenotypic Discrimination and Biomarker Selection

Figure 3

𝑅²/𝑄² plots of 4 classifiers on 2 cases. Correlation between the actual 𝑦-variable and the permuted 𝑦-variable (𝑥-axis) versus the 𝑅² and 𝑄² values (𝑦-axis) on (a) Normal versus CRC, and (b) pre versus post. Dot: 𝑅², circle: 𝑄², straight line: 𝑅² regression line, dash dot line: 𝑄² regression line. purple: RF, blue: PLS, brown: LDA, and green: SVM.

(a)

(b)