cluster the motion of pedestrians

[pengqianhan]

In model.py line 149 As the v.shape is [batch,2,obs_len,num_ped], then (v.permute(0, 3, 1, 2)[0, :, :, 0]).shape is [num_ped,2], which means the location of num_ped pedestrians at the first time step. The location of every pedestrian at the first timestep is (0,0). I am confused that how the line 149 in model.py can obtain the max speed change for every sequence.

Can you explain how to obtain group’s maximum change of speed and cluster the motion of pedestrians?