Miranda

Hello,  I have a question regarding the Gurobi solver. I solved two mixed integer programmings (named MIP1, and MIP2 respectively) which are in the same structure/formulation (they are all set-pack...

Hello, Gurobi can set the time limit by setting the parameter TimeLimit, but I am wondering is the Timelimit parameter set for total CPU time or system time (the time used to solving the model excl...

Hello, I am currently solving a problem by adding new constraints to a linear program at each iteration, and then resolve the linear program from the beginning. I am curious about if there is any w...

Hello, The problem I am solving is to minimize sum of 1/x[k] for k in range(n), under a set of linear constraints. I set the lower and upper bounds for each x[k] be greater than 0; therefore, 1/x i...

Hello, After running the MIP model via Gurobi, the log file sometimes provides me how many certain cuts are added. Is it possible for me to get the total number of added cuts directly?  For example...

Hello everyone,  I have a question regarding the root relaxation objective value.  The problem I am trying to solve is an integer program(IP). I modeled my problem as integer program (i.e. variable...

Hello, I am trying to find the optimal integer solution of a IP by solving a sequence of LPs instead of MILPs. What I am currently doing is I resolve the entire LP from sketch after adding some ce...

Hello, I got confused about understanding the outputs of Gurobi. I formulate a problem as a mixed integer program via Gurobi.  I used the code 'model.optimize()' to find its optimal solution, and I...

Hello, I am wondering which algorithm/optimizer Gurobi uses to solve 'general' convex optimization (linear objective with quadratic and linear constraints)? Is Gurobi using interior point algorithm...

Hi, I have a question about expressing if statement in constraints.  The constraints that I want to add are Z[i,j]+Z[j,i] = 1 if i is not equal to j, where i and j are indices within a certain rang...