Dong Han

Hello team, I am trying to use barrier method to solve a LP model. In some cases, my model will be infeasible and I would like to get the FarkasDual. The thing is I cannot access the FarkasDual sin...

Hello, I am trying to using GRBcbsolution to provide a feasible solution for my model when the where is equal to GRB_CB_MIPSOL. But I noticed at the beginning, the solution didn't show in the "Incu...

Hello, I try to use barrier method solve a LP problem. Since I would like to obtain an interior point, I try to terminate barrier method by setting "BarIterLimit" as 1. When I get the solution afte...

I am coding with C++ to build a tsp model by using C API. The model became infeasible after I adding the first lazy constraint which is a subtour elimination constraint. But when I add this constra...

Hello, I am trying to solving a very large LP, I am confused why the number of constraints removed during presolve is lager than the number of constraints in the original model? Please read the fol...

Hi, I am trying to revised tsp_c++.cpp to get multiply feasible solution. I set PoolSearchMode by default, and when I trying to get feasible solution, I just got infeasible solution which has subto...