Fig. 2: A multiscale atom-specific representation for OIHP structure.
From: Topological feature engineering for machine learning based halide perovskite materials design
A An illustration of atom-specific representation of OIHP structure. The perovskite supercell is decomposed into a series of atom-sets. B The atom radius is chosen as the filtration parameter. The systematically increasing filtration value generates a series of topological spaces at different scales. C The corresponding simplicial complexes from the filtration process.
