In our ik config such as smplx_to_g1.json, you might find following params. I add annotations here for your understanding.
"ik_match_table1": {
"pelvis": [ # robot's body name
"pelvis", # corresponding human body name, here we are using "pelvis" as example
100, # weight to track 3D positions (xyz)
10, # weight to track 3D rotations
[
0.0, # x offset added to human body "pelvis" x
0.0, # y offset added to human body "pelvis" y
0.0 # z offset added to human body "pelvis" z
],
[
# the rotation (represented as quaternion) applied to human body "pelvis". the order follows scalar first (wxyz)
0.5,
-0.5,
-0.5,
-0.5
]
],
...