Fig. 8
From: Construction of gas content model based on KPCA-SVR for Southern Sichuan shale gas

(a) Histograms of PC1, PC2, PC3, Vg, (b) Variation with depth.
From: Construction of gas content model based on KPCA-SVR for Southern Sichuan shale gas
(a) Histograms of PC1, PC2, PC3, Vg, (b) Variation with depth.