Module DNSF in PORT
Solve separable nonlinear least squares problem (i.e., one with both linear and
nonlinear parameters). Derivatives are approximated using finite
differences. Uses variable-projection technique to eliminate linear
parameters, thus obtaining a simpler nonlinear least squares problem.
Classes : K1b1a1 . Unconstrained nonlinear least squares approximation by
smooth functions, user provides no derivatives
Type : Fortran subroutine in PORT library (NL3OPT sublibrary).
Access : Proprietary. Many implementations available.
Precision: Double.
Usage : CALL DNSF (N, P, L, ALF, C, Y, CALCA, INC, IINC, IV, LIV, LV, V, UIPARM,
URPARM, UFPARM)
Details : Fullsource Source
Sites : (1) NETLIB
NETLIB: Public access repository, The University of Tennessee at
Knoxville and Bell Laboratories
Precision: Double. (Single: NSF)
You may access components from NETLIB outside GAMS as follows.
Source : Available by anonymous ftp from netlib in the port
subdirectory
Fullsource : Available by http from netlib in the port subdirectory
GAMS is a service of the Mathematical and Computational Sciences Division of the Information Technology Laboratory of the National Institute of Standards and Technology
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