Figure 1. Network-based hierarchical segmentation of GroEL+GroES at 7.7Å.

The affinity map and cluster assignments are shown for each hierarchy level. The number of nodes in the network is given for each level. Importantly, in level t there are n_t nodes, thus the segmented map has n_t clusters and the affinity matrix A_t is (n_t × n_t). At level 1, each of the 254,724 voxels in the map are assigned to their own cluster, however, the map is shown in gray for visualization purposes. Levels two and three are left out of the diagram due to space considerations.