Sibo Li
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Activity overview
Latest activity by Sibo Li-
Sibo Li commented,
Hi Riley,I set the model with default parameters, but no improvement is observed. And No Relaxation Heuristic seems not working either.However, a gap of about 20% is not perfect but acceptable for ...
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Sibo Li commented,
Hi Riley,Thanks for reminding me that, actually Crossover=0 is set as I copied the parameters from another problem, where crossover takes too much time. I have tried enabling crossover and that he...
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Sibo Li commented,
Thanks a lot, Riley,I have been trying multiple times for one instance of our model, it seems that whether the problem can be solved is not random, but depends on the specific input of different ca...
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Sibo Li created a post,
MIP stuck in branch-and-cut in some situations
AnsweredHello everyone,I am solving a series of similar MIP problems in size, #constraints, and other statistics. While some can be solved successfully, others may be stuck in branch-and-cut. It is quite s...