AMPL

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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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Topics (6026)
Replies Last Post Views
[AMPL 1742] Complex numbers in AMPL? by Sive.Christiansen
0
by Sive.Christiansen
[AMPL 1737] AMPL Cannot compute sqrt by Steven Harrod
3
by Kanika-3
[AMPL 1736] AMPL Cannot compute sqrt by Kanika-3
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by Kanika-3
[AMPL 1731] Constraints 'c1' and 'c2' are inconsistent by patrick-131
2
by Robert Fourer-2
[AMPL 1743] Complex numbers in AMPL? by Sive.Christiansen
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by Sive.Christiansen
if-there-else- constraint not working by HeatherS
1
by Paul A. Rubin
[AMPL 1729] no used indexs in restrictions by Eva Romero
1
by Robert Fourer-2
[AMPL 1732] save the number of Branch and Bound nodes by gabriel.gnzlz2
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by gabriel.gnzlz2
[AMPL 1663] How to combine user-defined functions with AMPL? by ZhangWeizhong
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by ZhangWeizhong
[AMPL 1726] Iterating over objectives by mattias-11
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by mattias-11
[AMPL 1719] Why AMPL licenced version takes longer time to compute compared to the student one? by xalata
3
by xalata
[AMPL 1723] set many directories for commands "model", "data", "include" and "commands" using environmental variable "ampl_include"; for "load" using parenthesized string expression by patiobarbecue
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by patiobarbecue
[AMPL 1699] Why AMPLCML-CPLEX is extremely slow by Tuong Nguyen
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by Tuong Nguyen
[AMPL 1721] .nl file write and constraint order by vzavala81
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by vzavala81
[AMPL 1718] recording execution time and iterations in AMPL by Hossein Haghighat
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by Hossein Haghighat
[AMPL 1710] Fractional IP Examples? by Sarah Root
3
by Robert Fourer-2
[AMPL 1713] Re: FW: 'tube challenge'- TSP formulation by Bo Zhao-2
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by Robert Fourer-2
[AMPL 1703] What is wrong with my constraints written in AMPL? by Suji-2
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by Suji-2
[AMPL 1706] AMPL insufficient memory question by Awesome Adam
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by Robert Fourer-2
[AMPL 1697] Erro messages--->RE: How to combine user-defined functions with AMPL? by ZhangWeizhong
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by Robert Fourer-2
[AMPL 1698] AutoCad Software Free Download & AutoCAD 2009 is coming by selvan suganthy
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by selvan suganthy
[AMPL 1678] Piecewise expression by mattias-11
4
by Robert Fourer-2
[AMPL 1679] using excel file as Data file for Ampl? by Suji-2
2
by Suji-2
[AMPL 1688] Do you know about Samsung 70-inch Full High-Definition LCD TV? by rocky-18
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by Subir Das-3
[AMPL 1689] using Knitro through the kestrel in NEOS by Ruben Proano
1
by Robert Fourer-2
[AMPL 1687] Investors lose quarter of money increased by IPOs in 2008 by rocky-18
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by rocky-18
[AMPL 1682] setting upper and lower bound on variables in a loop by Hossein Haghighat
1
by Paul A. Rubin
[AMPL 1683] Spacing Constraints by Awesome Adam
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by Paul A. Rubin
[AMPL 1681] How Bloggers Make Money from Blogs ? by rocky-18
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by rocky-18
[AMPL 1667] Inequality help in AMPL (NLP) by monoxide_child666_20...
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by Kanika-3
[AMPL 1677] How to fix a computer that has Frozen? by rocky-18
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by rocky-18
[AMPL 1675] How do you put an if-then-else clause within the definition of a constraint in AMPL? by c2
1
by Robert Fourer-2
[AMPL 1671] Incrementing in FOR loop by Kanika-3
2
by Kanika-3
[AMPL 1672] Problems with AMPL's database handler under Windows Vista by endre.bjorndal
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by endre.bjorndal
[AMPL 1670] Recall: Hello by Shrinivas Sale
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by Shrinivas Sale
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