Figure 1.

C-vine graph illustrating partial correlation structure. C-vines were utilized to generate biologically plausible metabolomics data. ${\rho }_{i,j}$ represents the correlation between metabolites $i$ and $j$. ${\rho }_{i,j|k}$ represents the partial correlation between metabolites $i$ and $j$ after conditioning on ${\rho }_{k,i}$ and ${\rho }_{k,j}$.