haonan 钟

1. Community
2. Algorithms
3. LP relaxation is not solved to optimality

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
• February 25, 2024 13:12
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1. Community
2. Algorithms
3. LP relaxation is not solved to optimality

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
• February 25, 2024 13:10
• 0 votes

1. Community
2. Algorithms
3. LP relaxation is not solved to optimality

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
• February 23, 2024 09:39
• 0 votes