Focusing on the most significant solvent descriptors, n 2 , B, and ε, three radar charts are plotted in Figs. 12 and 13, showing the relevant properties of the initial, first-10 active-learning, and last-10 active learning samples. To facilitate comparison, all features are normalized to a range between 0 and 1 using min-max normalization, except for the dielectric constant. Since the dielectric constants of two solvents are significantly higher than the others, the dielectric constant is normalized relative to the remaining solvents, resulting in values of these two solvents exceeding 1.