AMPL Modeling Language

This is a discussion and help group for AMPL, an algebraic modeling language for optimization problems of many kinds.  AMPL lets people use common notation and familiar concepts to formulate models and examine solutions, while the computer manages communication with appropriate solvers.

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Showing 1-20 of 4648 topics
Would love a recommendation between the open-source nonlinear solvers Steve D 9:55 AM
infeasible, no Basis, no primary variables returned Anke 7:35 AM
Sum the values in Array DINESH BABU 7:26 AM
RE: [AMPL 13918] Not "constant" objective function Robert Fourer 6:38 AM
Problems solving large SOCP with CPLEX/GUROBI 6:32 AM
convert ampl in cplex language capitus capiti 6:06 AM
Invoke AMPL from Python Vaibhav Rungta 5:28 AM
How To Report Date in AMPL Abdulaziz Alghosh 4:58 AM
Get the date to have a log_file name containing the date Benoît Martin 4:50 AM
Reporting the Computation Time to a file and Creating a .sol File Abdulaziz Alghosh 3:22 AM
memory problem Emily 4/27/17
Regarding different solutions in CPLEX 12.5 and 12.6 with AMPL Abhishek Agrawal 4/27/17
Clustering 4/27/17
Different results for same Model-Data in CPLEX 12.5 and 12.6 Abhishek Agrawal 4/26/17
CEO Named at AMPL Optimization Robert Fourer 4/26/17
Options in AMPLIDE Benoît Martin 4/26/17
AMPL Solutions 4/26/17
nonquadratic nonlinear constraint error cplex Ramz 4/25/17
"Number of Nonzeros" Albani 4/24/17
SECTION 1.7 - Exercises 1-1 4/24/17
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