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Using Branch and Bound in Cplex

Posted: Wed Jan 22, 2020 10:37 am
by amirmd761
Hi everyone, I am solving a large MILP using gams. My instructor asked me to solve the problem using branch and bound method. As for as I know Cplex uses Branch and Cut to solve the MILP. Can anyone help me on how to implement the b&b method in gams?

Re: Using Branch and Bound in Cplex

Posted: Thu Jan 23, 2020 5:16 pm
by dirkse
Hello,

Why does your instructor want you to solve with branch & bound?

-Steve

Re: Using Branch and Bound in Cplex

Posted: Mon Jan 27, 2020 1:19 pm
by amirmd761
Actually I am trying to compare two formulations of the same problem and I need to calculate number of nodes calculated to find the optimal solution. Traditional branch and cut is giving 0 nodes. That's why I need to use b&b method.

Re: Using Branch and Bound in Cplex

Posted: Fri Jan 31, 2020 7:04 am
by amirmd761
dirkse wrote: 4 years ago Hello,

Why does your instructor want you to solve with branch & bound?

-Steve
Actually I am trying to compare two formulations of the same problem and I need to calculate number of nodes calculated to find the optimal solution. Traditional branch and cut is giving 0 nodes. That's why I need to use b&b method.