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Decision Optimization CPLEX & For Watson Studio

Showing 100 of 14438

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

ODBCUpdate function needed

On the recent versions of cplex we have functions like ODBCRead and ODBCPublish for data management on Data bases engines, but it is also necessary to have a function like ODBCUpdate which corresponds to the old one DBUpdate function which allows ...
almost 2 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

Add support for Java 11 in CPLEX java API

Currently, CPLEX and CPO provide a java API to the engines. This API currently supports Java 8 (IBM SDK and Oracle Java). A more recent versions of Java with LTS is Java 11 - It would be nice if CPLEX Optimization studio officially supports Java 1...
over 2 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 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under 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 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 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

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 3 years 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 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under 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 3 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration