Fig. 7: Distinctions of the materials in the dataset M ∪ T.
From: Machine learning on multiple topological materials datasets

Distinction between trivial insulators (TrI) and nontrivial topological materials (NTM) based on a the maximum packing efficiency (%) and b the fraction of p valence electrons in the dataset M ∪ T. The NTM cannot be further discriminated into HSPSM, HSLSM, TCI, and TI.