Chags

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Phd student

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Recent activity by Chags Recent activity Votes

  • How to relax integrality for some variables?

    Answered

    I'd like to implement some relax-fix heuristics with my model in python. I know we can fix values with variables lb and ub attributes. But how could I relax x[i,j] from {0,1} to a continuous variab...

    Chags 3 followers 2 comments 0 votes

  • Lagrangian Relaxation bound greater than optimal solution

    Ongoing

    I am working on a Lagrangian relaxation for a minimization MIP. Everything seemed to be working fine before I started to run a batch of instances.  Checking the log results for one of the instances...

    Chags 4 followers 3 comments 0 votes

  • Use of academic license on cloud services

    Answered

    Hi I am currently using a gurobi academic license for my doctoral research. Recently we are facing serious infrastructure issues in my lab and I have been thinking about renting cloud services for ...

    Chags 4 followers 3 comments 0 votes