Fig. 5
From: Identifying Pb-free perovskites for solar cells by machine learning
a The accuracy of classification as a function of the number of features. Confusion matrices of classification results for the fivefold test set with b 3 features, c 7 features, and d 12 features. Class “1” means set of materials with a bandgap in a range of [0.3 eV, 0.8 eV] and class “0” of everyone else
