Eli Towle

Hi Zakarya, Yes, in general, Gurobi will terminate sooner if you set the BestObjStop parameter to a value greater than the optimal objective function value (for minimization MIPs). However, there a...

Hi Zakarya, In your case, you can simply set the BestObjStop parameter equal to that specific value (plus some small tolerance). How exactly to set this parameter depends on the particular API you'...

Hi Chenguang, This is more of a model formulation question. The idea is to exploit the fact that Z_{iv} is binary in order to enforce logical conditions. For example, if we want to add a penalty of...

HI Matheus, What does your callback function look like? In particular, I'm curious about the values of "where" that you're using in the callback function. Note that "where == GRB_CB_MIPSOL" is call...

Hi Giang, Can you clarify: are you looking for a way to model the logical condition that either \( x \geq a \) or \( x \leq b \)? This can be done if bounds on \( x \) are known. Let \( \ell \) and...

Hi Matheus, Do you have a log file that shows a few iterations of the initial cutting plane algorithm where this happens? Thanks! Eli

Hi Mohamed, Based on the log files, it looks like the MATLAB code you're running iteratively adds constraints to the model and re-solves it until the model has a finite solution. This looks normal ...

Hi Mohamed, The first nine models you solve are either infeasible or unbounded. The last model you solve is feasible with an optimal objective value of -2111.190358. Is this different from what you...

Hi Chenguang, These sound like modeling questions. It's common to use binary variables to ensure that certain logical conditions are satisfied. For (1), consider a fixed time i and operation v. Ass...

Hi Thomas, Could you clarify what you mean by "remote Gurobi server"? Is the AWS instance being used as a Compute Server? If this is the case, Gurobi needs to be installed on the client machine (th...