My MIP problem cannot reach my Gap after one day!

ユーザーの入力を待っています。

Chenxi Li

2024年11月02日 10:20

• 
• 

I am working on a MIP problem with only 1000 binary variables. However, I cannot even reach the gap of 10% after one day. I have altered my matrix range and RHS range to a reasonable scale.

What I can do now? I am sure that this model can be solved because if I fix all the binary variables, it could reach the optimal easily.

関連

• Performance

0

• 

  Jaromił Najman

  • Gurobi Staff

  2024年11月04日 10:36

  Please note that even if the models has "only" 228 binaries after presolve, it is still 2^228 > 10^68 possibilities. Thus, the model can still be very hard even if it looks small.

  You might want to share the model such that we have a closer look and provide better help. Note that uploading files in the Community Forum is not possible but we discuss an alternative in Posting to the Community Forum.

  Best regards, 
  Jaromił

  0

サインインしてコメントを残してください。