Search results: Decision Optimization CPLEX & For Watson Studio

Showing 7

Improve OPL Interfaces by providing dynamically typed API and a “façade” compatible with the .NET framework

Using OPL interface in .Net is cumbersome. Manipulate data elements object and result is far from being trivial.By example, instantiate an int look like that: OplDataSource dataSource = new MyCustomDataSource(oplF); internal class MyCustomDataSour...

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

6 VOTE

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

4 VOTE

Allow initialisation using OPL of arrays within tuple sets

In OPL it is not possible to initialise an array which is within a set of tuples either through values or programmatically. An enhancement should be made to OPL to allow this. Consider: {string} Factors = {"a","b","c"}; tuple T_2 { key int i; int ...

over 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

4 VOTE

Have a line number in OPL out of bounds errors

int E[i in 1..2]=2; int n=3; dvar int x[1..2] in 0..10; subject to { E[2] >=x[3]; x[1]<=2; } execute { writeln("ok") ; } gives an error but without line number. This is easy but in bigger models, it takes a lot of time to spot line numbers.

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

4 VOTE

"If and only if" for indicator-constraints in MATLAB API

We use the CPLEX for MATLAB API to solve a MILP. In our case the bottleneck of the API is the limited functionality of indicator constraints. Whereas in OPL and the Java API an "if and only if" statement is possible, this functionality is missing ...

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

3 VOTE

cpoptimizer interactive should display any var and expressions

CP Optimizer interactive should mimic CPLEX optimizer interactive for these two points 1. In Cp Optimizer command line, enable to display the value of an IloNumVar (floating point variables) and IloNumExpr2. enable write solution in a file

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

4 VOTE

Scenario Migration tool

A good step to help DOC users migrate to DODS would be a simple Scenario migration tool that would extract scenario data from DOC and import into DODS. An option to also "export DOC Scenario(s) as CSV" could help administrators import the DOC data...

about 7 years ago in Decision Optimization CPLEX & For Watson Studio / Decision Optimization for Watson Studio 1 Not under consideration

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