Fig. 7: Functional heatmaps identify mechanically relevant regions of structures.

Heatmaps showing the spatial distribution of the changes in efficiency associated with bond addition (a, c) or bond removal (b, d), as computed by the CNN model (a, b) or the DEM model (c, d), in one example structure that lays on a 172-bond lattice. Blue shades correspond to regions that lead to lowered efficiency, while red regions lead to increased efficiency. i Distribution of the correlation coefficient R between CNN and DEM values of Δη, see Methods for details e–j Same, for a structure of the 694-bond lattice, but still using the CNN model trained with 172-bond structures. The figure shows that information of a smaller lattice can be transferred to a larger one and still be used to identify functional regions of structures.