Yamin Wang
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Recent activity by Yamin Wang
Performance difference of two formulations
Answeredx is continuous variable, ix, i1,i2 and i3 are binary variables. Constant is a constant Formulation 1: x <= [1 (i1+i2+i3)]*Constant Formulation 2: ix= i1+i2+i3 x<=(1ix)*Constant Question 1: Does ...

Got different results for the same case in two different platforms.
OngoingI have two different platforms (these two platforms locate on different serve) to execute Gurobi and solve a MIP problem. When I set the absolute gap = 0 and relative gap tolerance is a positive nu...

How to get Unique Solutions to Linear Programs in different execution
AnsweredIn my different runs of Gurobi solving, the orders of constraints or variables we sent to Gurobi are different because I use multithreading techniques. So in each execution, I got a different solu...