Hongmin Zhang
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Activity overview
Latest activity by Hongmin Zhang-
Hongmin Zhang commented,
Thanks a lot for your suggestions!!! After adjusting the IntFeasTol parameter, I get the results I want. I have never imagined that I should increase IntFeasTol from 10e-9 to 10e-5. Many thanks to ...
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Hongmin Zhang created a post,
The optimal solution is located in the solution pool, where Gurobi has identified n best feasible solutions. However, it may not be selected as the best solution by Gurobi
Awaiting user inputI have extracted some of the best solutions that Gurobi identified in the solution pool. Surprisingly, I have noticed that Gurobi is indeed capable of producing the solution I desire. However, Guro...
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Hongmin Zhang created a post,
The wrong objective value
AnsweredI am currently working on solving an MIQP problem where the objective function is defined as v'Wv. Since W has been confirmed to be a positive definite matrix, the objective value should theoretica...
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Hongmin Zhang commented,
Dear David, I believe that the 'PreQLinearize' parameter facilitates the transformation from MIQP (Mixed-Integer Quadratic Programming) to MILP (Mixed-Integer Linear Programming), and I am curious ...
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Hongmin Zhang created a post,
How does simplex method solve the MIQP problem?
AnsweredAs my model is an MIQP problem, the Gurobi software's log indicates that the simplex method is being utilized. I am perplexed by how the simplex method is applied to an MIQP problem. Is there any c...