The NEOS Server offers LOQO for the solution of nonlinearly
constrained optimization problems in AMPL
format. LOQO is based on an infeasible primal-dual interior-point method
and solves both convex and nonconvex optimization problems. Additional
information for LOQO can be found in the
LOQO User's Manual (Version 4.05).
LOQO was developed by Robert J.
Vanderbei and Hande Y.
Using the NEOS Server for LOQO
The user must submit a model in
format to solve a nonlinearly constrained optimization problem.
Sample models in the AMPL format can be found in the
The model is specified by a model file, and optionally,
a data file and a commands file. If the command file is specified
it must contain the AMPL solve command.
The commands file can contain any AMPL command or set
options for LOQO with, for example,
option loqo_options "maxit=50 epssol=10e-05";
Printing directed to standard out is returned
to the user with the output.
Enter the location of the ampl model (local file)
Enter the location of the ampl data file (local file)
Enter the location of the ampl commands file (local file)
Dry run: generate job XML instead of submitting it to NEOS
Please do not click the 'Submit to NEOS' button more than once.