Search found 4 matches

by whan1013
1 month ago
Forum: Modeling
Topic: Problem is integer infeasible or unbounded
Replies: 3
Views: 403

Problem is integer infeasible or unbounded

Hi. I am solving the wind turbine placement and array cable route design problem which is formulated as a MILP problem. I am trying to solve the problem using GAMS CPLEX, but the result shows that problem is integer infeasible or unbounded. I would appreciate it if anyone can help to identify the pr...
by whan1013
2 years ago
Forum: Modeling
Topic: Problem with solving MIP with CPLEX (extremely low speed convergence)
Replies: 5
Views: 1791

Re: Problem with solving MIP with CPLEX (extremely low speed convergence)

So we can say it's long execution time is due to bad scaling of the parameters?
But though after fixed it, there were no significant differences.
What else can I try to speed up the solution?
by whan1013
2 years ago
Forum: Modeling
Topic: Problem with solving MIP with CPLEX (extremely low speed convergence)
Replies: 5
Views: 1791

Problem with solving MIP with CPLEX (extremely low speed convergence)

Dear all Hi guys It's my first post in this forum. I hope that I chose the right thread for my question. I am modeling the supply chain optimization MILP model of biorefinery which determines location, capacity, and pathway of biorefineries and when they will be constructed. In solving this problem ...