Fig. 4. Independent macaque behavior was segmented into ethograms by SMP.

a Macaque image (top; adapted from OpenMonkeyStudio¹⁴) and corresponding posture keypoint coordinates, which have been rescaled as Hip-centered with the x–y plane including the Hip-Neck vector (bottom). b The median posterior distribution of class sizes was 10. c Example of the trends for the 1st and 2nd principal components (PC1 and PC2) of each motion motif with initial class size = 18 (arrowhead in b). d The synthesized ideal body trajectories in major motions are calculated by the inverse operation of PC analysis. Motion motifs 1–4 represent walking, climbing up and holding upside down, stepping down, and climbing up and staying, respectively (see also Supplementary Movie 3).