pairwise.pkl file generation

[mnbucher]

Dear authors,

Currently trying to reproduce the results from the paper but I would like to know how the sparse initial matrices were generated? From the pickle file we can see there is a 4096x4096 matrix given for each joint pair forming a limb. My current guess is that dim = (4096, 4096) comes from the initial 16x16x16 voxel space. How exactly were the 1s and 0s in the matrix generated? By some gaussian around the identity (i.e. same voxel) for Joint J_0 and J_1?

Thanks a lot for the help!

Best,
Martin