Xinshuo Yang
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Latest activity by Xinshuo Yang
Xinshuo Yang created a post,
How to make a deep copy of a linear expression using gurobipy
AnsweredI need to make changes to my objective function, solve the model and reset the objective function to be the original one. Since my objective function is a LinExp, I was wondering how to make a deep...

Xinshuo Yang commented,
What also confused is that solving the base model (use the MIPstarts but not make it a multiplescenario model) took about 0.2 seconds while in the multiplescenario model solving one scenario coul...

Xinshuo Yang created a post,
multiple scenario model running time
AnsweredI am using GUROBI multiplescenario model to solve a MIP with small perturbations from a base model. I know the solution to the base model. So I use var.VarHintVal or var.Start (not both) to guide ...

Xinshuo Yang created a post,
MIP with infinite number of feasible solutions
AnsweredI have a MIP where two continuous variables x and y are equivalent. So in the solution the sum (denoted by s) of x and y is determined/fixed, but there are infinite many choices of feasible solutio...

Xinshuo Yang commented,
That makes sense. Thank you.

Xinshuo Yang created a post,
Checking new RHS in multiple Scenarios
AnsweredI am using the multiple scenario Gurobi model in Python where in one of the scenarios I changed the RHS by: constr.ScenNRHS = new_RHS Now I would like to see whether this change has been success...

Xinshuo Yang created a post,
Sensitivity analysis for input parameter in LP
AnsweredDoes GUROBI support sensitivity analysis for input parameters in LP model?