IBM Data and AI Ideas Portal for Customers


This portal is to open public enhancement requests against products and services offered by the IBM Data & AI organization. To view all of your ideas submitted to IBM, create and manage groups of Ideas, or create an idea explicitly set to be either visible by all (public) or visible only to you and IBM (private), use the IBM Unified Ideas Portal (https://ideas.ibm.com).


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Showing 63

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...
about 1 year ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

Human-readable status response

In the new multiobjective optimization support in CPLEX (Java API, but likely true in other APIs), querying status via IloCplex.getMultiObjInfo(IloCplex.MultiObjIntInfo.MultiObjStatus, ...) returns a numeric code (e.g. 107). This is difficult to i...
almost 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

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.
over 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...
about 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

Cplex jar under DOC does not allow to iterate on Parameter Set

As pointed out in the PMR, some APIs of CPLEX are not available in DOC. The following ones for instance would be usefull for us (JAVA sample) * Iterate over IloCplex.ParameterSet to display the changed parameters* set MipDisplay crashes with excep...
over 3 years ago in Decision Optimization Center 1 Not under consideration

Remove constand offset variable if it equals zero

Exporting an LP-file creates a fixed variable representing a constant offset. For many users, this is often zero, so it shuld be optional or not appearing if the offset is zero. cf. https://www.ibm.com/developerworks/community/forums/html/topic?id...
over 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

Dump Data into file with Setting

Being able to export the external data of a model to a .dat file with one click.I suggest an option in the .ops under language/Run.The best would be to right click on the .dat file (with the connection to file, DB or Excel) and have an export opti...
over 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

Resolve race condition in CP optimizer engine

We've run into what seems to be a race condition in the cp optimizer engine with multiple workers. The issue occurs when a worker finds the initial solution right around the time limit. In this case, the engine believes that it timed out, but it a...
over 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

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