The OUTEST= (or OUTVAR=) data set is of TYPE=EST and contains the final parameter estimates, the gradient, the Hessian, and boundary and linear constraints. For METHOD=ML, METHOD=GLS, and METHOD=WLS, ...
SIAM Journal on Numerical Analysis, Vol. 22, No. 5 (Oct., 1985), pp. 821-850 (30 pages) We consider the problem of minimizing a smooth function of n variables subject to m smooth equality constraints.
There are several optimization techniques available in PROC NLMIXED. You can choose a particular optimizer with the TECH=name option in the PROC NLMIXED statement. No algorithm for optimizing general ...
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