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Decision Optimization CPLEX & For Watson Studio

Showing 91

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...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Future consideration

Automatic column generation

have an API or/and OPL command to do a Column generation on any problem.
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future 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......
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration

Extend CPLEX for Matlab to support the Matlab Compiler

CPLEX for MATLAB is an extension to IBM® ILOG® CPLEX Optimizers that allows a user to define optimization problems and solve them within MATLAB's development environment. However, an optimisation module developped with CPLEX for MATLAB and compile...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future 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...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

Have DO for DSX not only in DSXL but also in Watson Studio

DO for DSX help DSXL customers deploy optimization. With Watson Studio we have less flexibility to do that. We should have that available to ease adoption of Decision Optimization by Watson Studio customers
about 4 years ago in Decision Optimization CPLEX & For Watson Studio 0 Functionality already exists

Support user-defined Python module

I would like to maintain a set of Python functions and classes in a separate model/script, then do an import from that module in a notebook and DO4DSX model.Use cases:* I want to move complex function definitions out of my notebook. The functions ...
about 4 years ago in Decision Optimization CPLEX & For Watson Studio / Decision Optimization for Watson Studio 2 Planned for future release

OPL function to assign a initial value or fix te value to a variable

The only way to do a warm start is by using OPL script.it should be possible in the variable declaration to give a start value. the same way if you want to fix a variable to a value you need to 2 lines of code to fix the upper and lower bounds... ...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration

graphical dash board of the search console/log

have graph to represent the node through-put, number of active node, memory consumed, CPUs usage
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration

Dantzig-Wolf-decomposition with CPLEX

Extend the CPLEX-API to let reformulate a problem by CPLEX, notably a problem - which could be solved efficiently by a DW-decomposition. It should be reformulated by CPLEX to a problem (its dual) which could be solved by CPLEX's benders algorithm....
over 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Future consideration