Jiajie Zhang

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Activity overview

Latest activity by Jiajie Zhang

  • Jiajie Zhang commented,

    Hi Jaromił, I did not remember the specific parameter setting. These days I have tried many other parameter settings and have not found any infeasible solutions again. In case I find any infeasible...

    View comment Jiajie Zhang 0 votes

  • Jiajie Zhang commented,

    Thank you very much David. That exactly what I want.

    View comment Jiajie Zhang 0 votes

  • Jiajie Zhang created a post,

    Infeasible solution after addGenConstrPWL

    Answered

    Hi, I am working on the following entropy maximization problem I use addGenConstrPWL to piecewise linearize x*(1-lnx), following are my codes to solve the model. # generate points for PWLysh = zsh...

    Jiajie Zhang 3 followers 3 comments 0 votes

  • Jiajie Zhang created a post,

    Wrong root node number

    Answered

    Hi, I want to add cuts at root nodes. I first locate them by MIPNODE_NODCNT, but the node number is 5005. I am confused. Below are my codes. if where == MIPNODE:     cnt = GRB.Callback.MIPNODE_NODC...

    Jiajie Zhang 3 followers 3 comments 0 votes

  • Jiajie Zhang created a post,

    Can I add a quadratic user cut in my callback function

    Answered

    Hi, can I add a quadratic user cut in my callback function? Thanks.  

    Jiajie Zhang 3 followers 2 comments 0 votes