Meaning of "Intlinprog stopping at the root node"
8 次查看(过去 30 天)
显示 更早的评论
Hello,
When I use intlinprog for my 3D assignment problem which is an NP hard linear integer program, I get the following message almost every time:
Intlinprog stopped at the root node because the objective value is within a gap tolerance of the optimal value,
options.AbsoluteGapTolerance = 0 (the default value). The intcon variables are integer within tolerance,
options.IntegerTolerance = 1e-05 (the default value).
The solution is integer as expected and seems to be correct. What I would like to ask is intlinprog stopping at the root node. What shall I understand from this message? I assume that intlinprog uses a branch and bound like algorithm, which shall search for the solution in many possible branches. Could anyone please guide me regarding this message?
Best Regards,
ilke
0 个评论
采纳的回答
Ameer Hamza
2020-11-29
编辑:Ameer Hamza
2020-11-29
It is a term defined in the LP algorithms. Rood node is the relaxed LP problem. It is difficult to describe everything in this answer so you can find the detail at this link: https://www.mathworks.com/help/optim/ug/mixed-integer-linear-programming-algorithms.html
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Get Started with Optimization Toolbox 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!