Dittmar, Robert F. (contributor); … - 2003 - [Elektronische Ressource]
non-convergence as a rejection of the EH, the evidence is overwhelmingly against the EH when three
rates are considered.9 … The non-convergence does not appear to be related to the model stability.
Indeed, the largest root of the unrestricted VAR … automatically holds for rh and rn.
9The BFGS method is widely known to have good convergence properties when started near an optimum …