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Decision Optimization CPLEX & For Watson Studio

Showing 91

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 2 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Future consideration

DOC-like row filters for table views in DO

Have the ability to create a set of filters on a table view that:a. As a set of filters that each can be added, edited and removed.b. Are persistent, i.e. do not disappear when switching views. c. Can be enabled/disabledd. Include logic like `cont...

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 3 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

CPO Cumul function enhancement

Our COLA project Optimisation model concerns cyclic scheduling (an object is to be built every constant X amount of time) using cumul functions. Today we need to create intervals for every object to be build in order to calculate cumul functions f...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration

CPO enhancement requests : cumul and noOverlap functions should (optionally) take intensity into account

CPO enhancement requests : cumul and noOverlap functions should (optionally) take intensity into account
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future 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 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future 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 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration

Implementation of iif indicator constraint in C API

We would like to be able to implement if-and-only-if indicator constraints in the C API.
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Planned for future release

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 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration

Time to Best

I want to put your attention on the optimization concept called "time to best" (ttb), i.e. the time needed by an optimization procedure to find the best solution regardless of the total time needed by its complete execution. Anyone working in the ...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration