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Decision Optimization CPLEX & For Watson Studio

Showing 103 of 15383

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.
about 4 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

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...
almost 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Not under consideration

Automatic column generation

have an API or/and OPL command to do a Column generation on any problem.
about 4 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

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......
about 4 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

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...
about 4 years ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

Superior approximation algorithm for finding Maximum (or large) Cliques in very large graphs. (Multi-Partite Graphs can be found)

Our maximum clique finding algorithm (that is polynomial in its run time) and which seems (from DIMACS benchmark tests) to run better than other methods that are presently available would be beneficial to IBM because it would allow you to solve co...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

Add support for Python 3.9 and 3.10 to cplex & docplex packages (they support a very limited number of Python versions)

Please add support for Python 3.9 and 3.10 to the cplex and docplex Python packages as soon as possible and upload new binary packages (wheels) to the Python Package Index. The cplex package currently supports Python 3.7 and 3.8. According to the...
almost 3 years ago in Decision Optimization CPLEX & For Watson Studio 1

In OPL ODBC connection, add a setting for batch size

The prebuilt ODBCConnection allows OPL to access databases using ODBC. One way to optimize database access is to tune the execution batch size. With older versions of OPL that included DBLink, this was the dbUpdateBatchSize parameter.
almost 3 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Future consideration

Callbacks from CP for .Net languages like C#

Callbacks are available from CP using C++ or Java, but not if using the API from C# (or any .Net language). This seems to be very strange as the internal structures must be there inside the CP libraries etc in order to support the callbacks from C...
about 3 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

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

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