The NEOS Server offers FICO Xpress for the solution of mixed-integer
linear programming (MILP) problems that can be modeled in
AMPL format. To learn more about the FICO
Xpress Optimization Suite, visit the FICO Optimization website.
Using the NEOS Server with FICO Xpress
The user must submit a model in
format to solve an MILP.
section of the AMPL website provides examples of models in AMPL format.
The MILP problem must be specified by a model file with the options of a data file and a commands file. If the commands file is specified, it must contain
the AMPL solve command; however, it must not contain the model or data commands. The model and data files are renamed
internally by NEOS.
The commands file may include option settings for FICO Xpress. To specify
solver options, add
option xpress_options 'OPTIONS';
where OPTIONS is a list of one or more of the FICO Xpress options listed
in Xpress Options for AMPL.
Note: An email address is required for any submissions to FICO
Xpress solvers. This email address will be forwarded to FICO
and may be used by FICO for promotional purposes. When using the XML-RPC
interface, you must add the line <email>firstname.lastname@example.org</email> to the XML file that is submitted to NEOS.