David Torres Sanchez

Hi Kanato, Unfortunately not, only the file types listed here are allowed: InputFile Cheers, David

Have you tried making \(\texttt{z_hat}\) also an MVar? Cheers, David

Hi Marina, I guess this will work; you will get the relaxation solution for all the nodes, including the last one explored before hitting the work limit.If you keep and over-write \(\texttt{fractio...

Hi Zichun, Are the constraints the same?Terms are sometimes re-arranged for an equivalent constraint. Cheers, David

Hi Tian, Thanks for the feature request. I will add this for consideration. Cheers, David

Using 9.0.1 with NumericFocus>=1 produces the same result. We simplified our original input data to 4 decimal places. This did not significantly improve the issue although the resulting data in th...

Thanks for the extra log. Indeed, as you initially included, setting MIPFocus to 2 or even 3 looks like a good idea.You might also want to try: NoRelHeurTime Presolve settings e.g. PrePasses, Pre...

Hi Vida, You are setting a few parameters, have you tried using default parameters (remove all parameters being set)? Could you share the log using default parameters? Cheers, David

Hi Xiao, This is lower than the default MIPGap (1e-4). You are right, setting the MIPGap explicitly to 0 we get: Best objective 1.933093486649e-03, best bound 1.933093486649e-03, gap 0.0000%optimal...

Hi Xiao, Thanks for the extra output. When creating variables the default lower bound is 0.Hence that solution is not allowed, if we allow the \(\texttt{y}\) variable to be negative: y1 = model.add...