  We investigate the influence of the adjustment procedure and the set of
measured observables on the properties and predictive power of relativistic
self-consistent mean-field models for the nuclear ground state. These studies
are performed with the point-coupling variant of the relativistic mean-field
model. We recommend optimal adjustment algorithms for the general two-part
problem and we identify various trends and dependencies as well as deficiencies
of current models. Consequences for model improvements are presented.
