Fig. 4From: Feature importance measures from random forest regressor using near-infrared spectra for predicting carbonization characteristics of kraft lignin-derived hydrocharScatter plots for measured values of carbon content (a), O/C (b), and H/C (c) of hydrochars and their predicted values by RF models. R2TEST, coefficient of determination on test set data; RMSETEST, root mean square error on test set dataBack to article page