haonan 钟
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Latest activity by haonan 钟-
haonan 钟 commented,
I was adding lazy cuts where==GRB_CB_MIPSOL and also adding user cuts where==GRB_CB_MIPNODE. The getNodeRel() was added in GRB_CB_MIPNODE
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haonan 钟 commented,
I made a typo in previous comment. I was using getNodeRel() in GRB_CB_MIPNODE. And get that errors sometimes. Also, the obtained solution is not optimal sometimes. Do you have any idea why this hap...
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haonan 钟 commented,
Thank you for replying! I implemented my project with C++. In the callback that where==GRB_CB_MIPSOL, I obtained the solution with getNodeRel(variable, #of variables). Then I used a constraint to c...
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haonan 钟 created a post,
LP relaxation is not solved to optimality
Awaiting user inputHi, I'm using Gurobi to solve a MIP with lazy cuts through callbacks. I accessed the LP relaxation solution with getNodeRel in GRB_CB_MIPNODE. I found that the LP relaxation solution is not an opti...
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haonan 钟 created a post,
Is it possible to set the search strategy of the Gurobi MIP solver to DFS?
AnsweredOther than using parameter MIPFocus, is it possible to set the search strategy to be depth-first-search?
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haonan 钟 created a post,
Set an initial solution to Gurobi while using lazy constraints
AnsweredHi, I want to send Gurobi an initial solution. It is also feasible to all lazy constraints that will be added. What should I do to let Gurobi accept it? Thank you!