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CPLEX Optimization Studio

Showing 15

sin function in OPL

tuple breakpoint // y=f(x) { float x; float y; } sorted { breakpoint } breakpoints={<i,exp(2*sin(i))> | i in 70..135}; I am trying to code this while because of no sin function in OPL, I am not able to code this on OPL.
about 5 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

CPO interactive enhancement to write or query solution

CPO interactive misses some very useful command to simply query one solution value for a given variable with its name (allowing wildcards to display more variables) Today, the only way we can query a solution is through display solution command th...
almost 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Not under consideration

Consistent handling for exportModel(), writeMIPStarts() , etc

The handling where methods like e.g. exportModel() and writeMIPStarts() is not consistent and not intuitive. In case no absolute path is specifies, exportModel() always writes the file parallel to the mod-file. Whereas writeMIPStarts(), while star...
about 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Not under consideration

OPL shall generate concert model with column API

OPL fails at building very large scale models due to the fact that it uses a "row api" of concert : Variables are created and added then to the range constraints. Unfortunately, such API can become dramatically slow for very large models, and bui...
almost 6 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

Interface between CPLEX and FORTRAN

Since FORTRAN is one of the TOP20 programming languages in the TIOBE index (https://www.tiobe.com/tiobe-index/), I suggest that IBM create mixed-integer linear programming models with CPLEX and FORTRAN. I have not found a library similar to Concer...
over 2 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

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