Fig. 3
Classification of metallic and insulating states of VO2: a Initial data used for classification. Red dots represent metallic state, and blue ones represent insulating state. Phase transition line indicated by the black solid curve. b Forming subgroups after applying algorithm[S1] once. Similarly in (b) and (c), blue or red spheres are used to represent data with the same sublabel, where the center of sphere represents the average vector, and the radius represents number of vectors belong to this sublabel. c Results after repeating algorithm[S2,S3] 3 times. d Prediction of new data. New vector in the blue part will be recognized with label ‘insulating’, and label of new vectors in yellow part will be predicted as ‘metallic’. Blue and red dots are still the initial data