Table 1 GA selected PCs and the classification model performance (ROC)
From: Selection of microbial biomarkers with genetic algorithm and principal component analysis
Data for creating PCA | Result | Model _6 PCs | Model _5 PCs | Model _4 PCs | Model _3 PCs | Model _2 PCs | Model _1 PC |
|---|---|---|---|---|---|---|---|
All | PCs selected | PC1+, PC2–, PC7+, PC11+, PC15–, PC27– | PC1+, PC2–, PC7+, PC11+, PC27– | PC1+, PC2–, PC7+, PC27– | PC1+, PC2–, PC7+ | PC1+, PC7+ (or PC2–) | PC1+ |
AUC (CV) | 0.87 | 0.85 | 0.84 | 0.81 | 0.77 | 0.69 | |
Obesity | PCs selected | PC2–, PC4–, PC14+, PC16– PC18+, PC19– | PC2–, PC4–, PC14+, PC18+ PC19– | PC2–, PC4–, PC14+, PC18+ | PC2–, PC14+, PC18+ | PC14+, PC18+ | PC14+ |
AUC (CV) | 0.92 | 0.92 | 0.90 | 0.87 | 0.84 | 0.80 | |
Healthy | PCs selected | PC1+,PC3+, PC5–,PC23+, PC28–,PC34+ | PC1+,PC3+, PC23+,PC28– PC34+ | PC1+,PC23+, PC28–,PC34+ | PC1+,PC23+, PC34+ | PC1+,PC34+ | PC1+ |
AUC (CV) | 0.92 | 0.90 | 0.88 | 0.87 | 0.83 | 0.72 |