Extended Data Fig. 4. Discriminability of part affinity fields.

Within- (pink) and between-animal (blue) affinity cost distributions for all edges of the mouse skeleton with DLCRNet_ms5. The saturated subplots highlight the 11 edges kept to form the smallest, optimal part affinity graph (see Fig. 2b). This is based on the separability power of an edge, that is, its ability to discriminate a connection between two keypoints effectively belonging to the same animal from the wrong ones, and reflected by the corresponding AUC scores (listed at the top of the subplots).