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 4687 topics
Gurobi not respecting parameter bounds 5/26/17
Parameter Nomenclature in AMPL Larry Bonczar 5/26/17
let error 5/26/17
random number generator for different distribution Rupsana Parveen 5/26/17
RE: [AMPL 14085] Mysterious message "error processing var x[...]: no data for set I" Robert Fourer 5/25/17
Instantiate a parameterized constraint 5/25/17
Why I get diffrents results?? Betty St-Pierre 5/25/17
continuous variable in index expression context Dridi Marwa 5/24/17
If-then constraint Andres Castillo 5/24/17
Benders Feasibility Cuts nmas 5/23/17
Switching between models gives "error processing objective" 5/23/17
How to use the amplgsl solver and the smpswriter Sun Fei 5/23/17
Question equality pitau.scorpion 5/23/17
Need help Sun Fei 5/22/17
error in 1 subscript 5/21/17
display matrix Mateusz Nowak 5/21/17
Taking the product across and index Mike Sherwin 5/21/17
I’m running into a problem that I’m trying to resolve…wondering if someone in your shop has a suggestion. 5/19/17
Subscripted set in variable declaration Mateusz Nowak 5/18/17
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