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OPL language enhancements : cannot slice with nested constraints on subTuples

I've been a happy user of OPL language, which has lots of wonderful features. However, there is one remaining recurrent issue in data modeling, which prevents some intuitive modeling. This is called "cannot slice with nested constraints on subTupl...

over 5 years ago in CPLEX Optimization Studio / CPLEX Optimization Studio 1 Not under consideration

7 VOTE

Extend CPLEX for Matlab to support the Matlab Compiler

CPLEX for MATLAB is an extension to IBM® ILOG® CPLEX Optimizers that allows a user to define optimization problems and solve them within MATLAB's development environment. However, an optimisation module developped with CPLEX for MATLAB and compile...

almost 5 years ago in CPLEX Optimization Studio 0 Not under consideration

7 VOTE

Tuning Tool should work for CP as well as CPLEX

The Tuning Tool only works for CPLEX. It should also be made to work for CP.

almost 5 years ago in CPLEX Optimization Studio 0 Not under consideration

9 VOTE

JSON File Read for OPL

Many Industries have started using JSON file as a primary data format. However OPL Cplex yet does not provide a direct accessibility to JSON file. People who use doCplexCloud have the accessibility. But other people, who do not use doCplexCloud, c...

about 7 years ago in Decision Optimization Center 0 Not under consideration

6 VOTE

Produce log during OPL Extract phase similar to Solve Engine Log

Many OPL real-world optimisations spend a large proportion of the overall solve time performing extraction/generation and there is no log of what is happening during this time. There should be a log produced during Extract similar to the Engine Lo...

over 4 years ago in CPLEX Optimization Studio / CPLEX Optimization Studio 1 Not under consideration

6 VOTE

Automatic column generation

have an API or/and OPL command to do a Column generation on any problem.

almost 5 years ago in CPLEX Optimization Studio 0 Not under consideration

6 VOTE

CPLEX object create by oplrun and concert shall be equal

the CPLEX object created by an OPL model is not the same as tyhe CPLEX object created with concert technology.It creates limitation and complexity that prevent people to use OPL in many cases, such advance algorithms with call backs manual cuts......

almost 5 years ago in CPLEX Optimization Studio 0 Not under consideration

6 VOTE

Cplex.solveFixed() for OPL Script

Is there an equivalent of Cplex.SolveFixed() for OPL Script ? I'm looking for dual costs of a MILP. So I'd like to 1) solve it to get the solution. 2) solve the corresponding LP with fixed integer variables 3) get dual costs I don't know in advanc...

almost 5 years ago in CPLEX Optimization Studio 0 Not under consideration

3 VOTE

a new parameter to control to force MIPStart if the variables are feasible

CPLEX choose to use MIPStart or not accoring to the heuristic. But sometimes the user think MIPStart values as particular variables is the best way to solve the problem. So we’d like to request a new parameter to control to force MIPStart if the v...

over 2 years ago in CPLEX Optimization Studio / CPLEX Optimization Studio 0 Not under consideration

7 VOTE

OPL Lazy Constraint Pool

At http://www-01.ibm.com/support/docview.wss?uid=swg21681643, it is indicated that it is not possible to add lazy constraints in OPL Script. I know OPL is not a programming language, but it is quite important to be able to add lazy constraints in ...

over 6 years ago in CPLEX Optimization Studio / CPLEX Optimization Studio 1 Not under consideration

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