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Decision Optimization CPLEX & For Watson Studio

Showing 99

add doopl in the CPLEX distribution

relying on docplex python API got much easier since docplex was included in the CPLEX product. doopl which is a python package that allows to call OPL model from python code can be download from https://pypi.org/project/doopl/ but having doopl in ...

Implement nonconvex quadratic constraints in CPLEX

CPLEX already supports nonconvex quadratic objectives, but not yet constraints, even though they bring a lot of flexibility in modelling.
over 1 year ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

Support custom installed Python libraries

DO for DSX seems to not support custom installed Python libraries.I installed a Python library for performance profiling in the notebook for my optimization model using '!pip install yappi'.The notebook runs fine, but when importing as model, the ...

Full optimization modeling editor inside DO for DSX

The DO for DSX model editor needs to be on par with other optimization model editors (such as our own CPLEX Studio) to remain relevant and for people to buy in. It should include built-in capabilities also to do sensitivity analysis, monitor mode...

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

OPL language enhancements : cannot slice with nested constraints on subTuples

I've been a happy user of OPL language, which has lots of wonderful features. However, there is one remaining recurrent issue in data modeling, which prevents some intuitive modeling. This is called "cannot slice with nested constraints on subTupl...
over 1 year ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Future 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...

Automatic column generation

have an API or/and OPL command to do a Column generation on any problem.
about 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 compiled...
about 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 to1) solve it to get the solution.2) solve the corresponding LP with fixed integer variables3) get dual costsI don't know in advance the ...
about 1 year ago in Decision Optimization CPLEX & For Watson Studio 0 Not under consideration