Note: This function behaves similarly to the MATLAB(TM)
inconsistent function.
Parameters :
d : int
The number of links up to d levels below each
non-singleton cluster.
Z :ndarray
The by 4 matrix encoding the linkage
(hierarchical clustering). See linkage documentation
for more information on its form.
Returns :
R : ndarray
A by 5 matrix where the i‘th row
contains the link statistics for the non-singleton cluster
i. The link statistics are computed over the link
heights for links levels below the cluster
i. R[i,0] and R[i,1] are the mean and standard
deviation of the link heights, respectively; R[i,2] is
the number of links included in the calculation; and
R[i,3] is the inconsistency coefficient,