| KMDA-package | Kernel-Based Metabolomic Differential Analysis |
| dkernel | Distance-based Kernel |
| dscore | Distance-based Kernel Score Test |
| hcc | Metabolomic Study on Hepatocellular Carcinoma (HCC) |
| invlogit | Inverse Logit Function |
| KMDA | Kernel-Based Metabolomic Differential Analysis |
| mdist | Metabolite Distance Metric |
| pearson.group | Grouping Based on Pearson Correlation Coefficients |
| skernel | Stratified Kernel |
| spearman.group | Grouping Based on Spearman Correlation Coefficients |
| sscore | Distance-based Kernel Score Test |
| tr | Trace of A Matrix |