# Samira Fallah

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## Activity overview

Latest activity by Samira Fallah
• Samira Fallah commented,

I want to add that I have a bilinear term, and one of the terms does not have any bounds in theory. To address this, we set the bound to -10^{20}, which introduces a numerical error.

• Samira Fallah created a post,

### Seeking Advice on Handling Infeasibility Issues in Gurobi MINLP Solver for Bilinear Problems

Awaiting user input

Hi, I have a question regarding the use of the MINLP solver of Gurobi for my bilinear problem. Due to the complexity of the problem, I have encountered some issues. Specifically, due to numerical e...

• Samira Fallah commented,

I appreciate your assistance. Therefore, my plan is to assign a lower bound of -GRB.INFINITY and enable Gurobi's aggressive presolve mode by setting model.Params.Presolve = 2, assuming that Gurobi ...

• Samira Fallah commented,

Thanks for the quick response.To answer this:In your particular case, would it be possible to set some realistic bounds for your variable? For example [-1e6, 1e6] or tighter? Establishing bounds ca...

• Samira Fallah created a post,

### Presolve for Non-Convex Quadratic Optimization

Hi,I have a question regarding the presolve in Gurobi. I'm using Gurobi 10 to solve a Non-Convex Quadratic Optimization problem that involves bilinear terms in the constraints. My goal is to obtain...

• Samira Fallah commented,

I have been able to successfully compile utilizing: g++ test.cpp -o main -I../../../../software/gurobi1000/linux64/include -L../../../../software/gurobi1000/linux64/lib -lgurobi100 -lgurobi_c++Thanks!

• Samira Fallah created a post,

### undefined reference

HiI am having a problem when trying to use the Gurobi library in C++. Specifically, I am getting "undefined reference" errors during the linking process. I have added the necessary lines to my bash...

• Samira Fallah commented,

Thank you for your suggestion. I have attempted to implement it by setting the value of "m.params.NoRelHeurTime" to 300 and 600, respectively; however, it did not yield the desired results.

• Samira Fallah commented,

By adjusting the parameters m.params.Presolve to 0 and m.params.NumericFocus to 1, 2, or 3, I was able to alleviate the issue to a certain degree. For less complex instances, these parameter settin...

• Samira Fallah created a post,