yansong bai
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Activity overview
Latest activity by yansong bai-
yansong bai commented,
Thank you very much, Marika and David. I just find the output 'xn' has the same value.And the information will not appear while the default MIPGap can appear. Optimal solution found at node 0 - now...
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yansong bai created a post,
Can the function PoolSolutions and MIPGap use at the same time？
AnsweredHi, when I try to terminate the solving process with a certain MIPGap, I find that PoolSolutions parameter didn't work. Can the parameters PoolSolutions and MIPGap use at the same time？ the expres...
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yansong bai commented,
Thank you, Maliheh.
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yansong bai created a post,
improving the quality of feasible solution
AnsweredHi, gurobi support center, I am running a MIP problem. Some useful parameters have been set acording to the discuss of community topics. However, the solving process is still slow, although many fe...
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yansong bai commented,
Ok, thank you Mario.
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yansong bai commented,
import numpy as npimport mathimport pandas as pdimport gurobipy as gpfrom gurobipy import GRBset1 = range(0,46)set3 = range(0,39)set4 = range(0,10)set5 = range(29,39)set2 = range(0,20)index = np.ar...
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yansong bai commented,
Thank you very much. It helps me a lot.
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yansong bai commented,
Gurobi version is 9.1.2 and Python is 3.7. The environment used is PyCharm.
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yansong bai commented,
Hi, Jaromił Thank you for your prompt reply. import numpy as npimport gurobipy as gpfrom gurobipy import GRBmodel = gp.Model('test')x = model.addVars(1,4,vtype=GRB.BINARY,name='x')y = model.addVar...
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yansong bai created a post,
can write() function export the lazyconstraints?
AnsweredHi, I try to use write() function to export a model. During the solving process, some lazy constraints are added to the model, finally, when i use write() to print the final model, i cannot see the...