The global model is defined as
where i is the residue index and l is the total number of residues used in the analysis. This is the most complex of the four categories as both diffusion tensor parameters and model-free parameters of all selected residues are optimised simultaneously. The dimensionality of the model is much greater than the other categories and is equal to
where ki is the number of model-free parameters for the residue i and is equal to dim, the number six corresponds to the maximum dimensionality of , and the number five corresponds to the maximum dimensionality of .
The relax user manual (PDF), created 2019-03-08.