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 4752 topics
Problems with using Conditional Constraints Aditya Paul 6:50 PM
display "no value" error for computed parameter Chaimaa ESSAYEH 11:16 AM
getting syntax error while execute ample file 9:56 AM
AMPL Bonmin Solver Message tar 6:38 AM
ERROR EN AMPL Win Torres Kon 6/23/17
How to read data from excel file in ampl 6/23/17
Error 6/23/17
Reporting last incumbent value information (time, node and value) from nodelog Víctor Mario Noble Ramos 6/22/17
Writing this constraint is correct to do? 6/22/17
Display "no value" error for a computed parameter Chaimaa ESSAYEH 6/22/17
AMPL Java APIs JAR tar 6/22/17
Segmentation fault within a loop 6/21/17
Problem with the conditions in the subscripts andres felipe montaña gavalo 6/21/17
How to print CPLEX iteration process ( gaps, nodefile, objective and dual values. etc.) out to .dat? Ying WANG 6/21/17
objective -Infinity Ying WANG 6/21/17
Set depending on value of another set 6/21/17
ERROR 6/21/17
continuous variable in index expression context Dridi Marwa 6/21/17
Error running cplex Ahmed Quzweeni 6/20/17
Error message Ozma Khan 6/20/17
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