Omkar Katta
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Latest activity by Omkar Katta
Omkar Katta commented,
Hello, Since my last post, I have reformulated the quadratic constraint so that it is more sparse. For example, instead of expanding  Qx  b ^2 < c to write our quadratic constraint, we instead...

Omkar Katta created a post,
QCP Results Change for Different Versions of Gurobi
AnsweredI recently upgraded to the latest version of Gurobi and noticed some discrepancies in the results of my QCPs. For example, after maximizing the same QCP under Gurobi v9.0.3 and under Gurobi v9.1.2,...

Omkar Katta commented,
Hello Simon, In case it helps, I also uploaded the mps files in my previous post to a Dropbox. Rather than copypasting these files from above, you can download them using the links below: Smaller...

Omkar Katta commented,
Hi Simon, Thanks for your response. Below, I copypasted the contents to the mps files for the smaller and larger models  let me know if there is a better way to share the original models. In cas...

Omkar Katta created a post,
Presolve isn't identifying redundant constraints in QCPs
OngoingI am comparing the results of two QCPs, a smaller one and a larger one. The only difference between these two QCPs is the inclusion of one linear constraint. By construction, this linear constraint...

Omkar Katta commented,
Thank you, Eli, for your clear answers. I have a better understanding of how to read the log file now. I'll see what I can do with MIP starts. Best, Omkar A. Katta

Omkar Katta created a post,
Attaining optimality without an incumbent solution
AnsweredI am trying to solve a MIP where I minimize the absolute value of one of the decision variables. As a result, the minimum objective value of the MIP is 0. I'm coding the objective function as the s...