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Couenne



The NEOS Server offers Couenne for the solution of mixed integer nonlinearly constrained optimization problems (MINLPs) in AMPL format.

Couenne solves MINLPs using a reformulation based branch-and-bound algorithm for a globally optimum solution. Additional details and options are available in the user manual for Couenne.

Couenne is developed and maintained by Pietro Belotti and others. Visit the Couenne page at COIN-OR for more details.


Using the NEOS Server for Couenne

The user must submit a model in AMPL format to solve a nonlinearly constrained optimization problem. Examples of models in AMPL format can be found in the AMPL library .

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. Printing directed to standard out is returned to the user with the output.
Enter the location of the ampl model (local file)
Model File:


Enter the location of the ampl data file (local file)
Data File:


Enter the location of the ampl commands file (local file)
Commands File:


Enter the location of the couenne options file (local file)
Options File:



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Dry run: generate job XML instead of submitting it to NEOS
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