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Search results: CPLEX Optimization Studio

Showing 43 of 109

Add TDNoOverlap constraint type to CP Optimizer

The TDNoOverlap constraint type is presented in chapter 7 of the Ph.D. thesis "A Constraint Programming Approach for the Time Dependent Traveling Salesman Problem", by Penelope Aguiar-Melgarejo https://hal.archives-ouvertes.fr/hal-01514369/documen...
over 5 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

saving data with a mouse-click instead of writing code through JDBC connector in CSV or other formats

I can currently browse it in the UI/IDE using the various inspectors. It would be nice if I could easily save this data to a file with a mouse click rather than having to write code, or add JDBC connections and rerun the model, etc. Typically what...
over 3 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

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

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 3 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Future consideration

Dynamic stopping criterion - An effective way to interrupt the optimal solution search for MILP

Please, see the attached document-

Postpone the end of support for IBM DOCPLEX Cloud

It is currently planned an end of support for IBM Optimization center in september 2020. Given the global crisis related to COVID 19 Pandemia, our development team are understaffed and there is a risk not to be ready by September 2020. Could we ex...

sin function in OPL

tuple breakpoint // y=f(x) { float x; float y; } sorted { breakpoint } breakpoints={<i,exp(2*sin(i))> | i in 70..135}; I am trying to code this while because of no sin function in OPL, I am not able to code this on OPL.
about 6 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

Human-readable status response

In the new multiobjective optimization support in CPLEX (Java API, but likely true in other APIs), querying status via IloCplex.getMultiObjInfo(IloCplex.MultiObjIntInfo.MultiObjStatus, ...) returns a numeric code (e.g. 107). This is difficult to i...
over 4 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 0 Not under consideration

Incumbent callbacks during polishing

I keep hitting this issue where I have to use something like an incumbent callback from CPLEX in order to report progress, use a custom stopping criterion, save intermediate solutions, etc. This works fine in normal CPLEX B&B, but it seems tha...

CPO interactive enhancement to write or query solution

CPO interactive misses some very useful command to simply query one solution value for a given variable with its name (allowing wildcards to display more variables) Today, the only way we can query a solution is through display solution command th...
almost 5 years ago in Decision Optimization CPLEX & For Watson Studio / CPLEX Optimization Studio 1 Not under consideration