Initial guess for class 'optim.problemdef.OptimizationProblem'.

Answered

Livia Paiva

May 19, 2022 18:04

• 
• 
• 

Hello community,

In this example problem (https://www.gurobi.com/documentation/9.5/refman/matlab_using_grb_within_ma.html), how can I set an initial guess?

 

Thanks!

Livia

0

• Official comment

  

  Simranjit Kaur

  • Gurobi Staff

  November 16, 2025 23:36

  This post is more than three years old. Some information may not be up to date. For current information, please check the Gurobi Documentation or Knowledge Base. If you need more help, please create a new post in the community forum, or try Gurobot, our chatbot interface offering instant, expert-level support.
• 

  Jaromił Najman

  • Gurobi Staff

  May 20, 2022 11:28

  Hi Livia,

  As described in the model argument documentation, you have to set the \(\texttt{start}\) vector. The facility.m example shows how to set the start vector.

  Best regards, 
  Jaromił

  0
• 

  Livia Paiva

  May 20, 2022 17:44

  • 
  • 
  • 

  Hi Jaromil,

  Thanks for your reply. I saw similar examples using the start vector, but they all would use the Gurobi general constraint interface.

  However, the example I mentioned uses the formulation called  “Problem-Based Optimization”. Is there a way to set the initial guess within this alternative interface?

  Best,

  Livia

  0
• 

  Jaromił Najman

  • Gurobi Staff

  May 30, 2022 07:09

  Hi Livia,

  I don't know about MATLAB's Optimization Toolbox, but what should be possible is to read in a solution file which holds an initial point. However, this is something that should be documented in MATLAB's Optimization Toolbox.

  Best regards, 
  Jaromił

  0

Post is closed for comments.