GAMS World Forum

Hello Michael, I have another follow-up question for this topic, I am aware that in the CPLEX log , it only shows how many integer-infeasible variables in each node (IInf column), and I tried to set the mipdisplay = 5, but it only shows the in and out variables. Is it possible to display the candida...

Hello Michael, Thank you for the reply. I have a follow up question From the manual, it says: Such solvers often allow to call a user supplied routine after a node in the branch-and-bound (B&B) tree has been processed. Within that routine, available information like the solution of a relaxation ...

Hello everyone, I have a question regarding the CPLEX solver. I'm trying to do some small calculation in each node (using values of coefficients from the problem formulation in each node) and save them as variables. Is it possible to add some actions / calculation during the MIP solving process in C...

Hello bussieck, Thank you so much this is very helpful, I have another follow-up question. Now that it's shown in the log, is it possible to save these values (i.e., Branching Variables, Objective function value) from each iteration into as a parameters / variables? Since I need to export these valu...

Hello everyone, I have a question regarding branching in CPLEX solver. Is there any way to display on which variable the algorithm used as the branching variable ? I am working on a Branch-and-Bound problem with the CPLEX solver and below is the CPLEX.opt that I used so far: $onecho > cplex.opt mipd...