Xinshuo Yang

Gurobi-versary
Curious
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  • Total activity 17
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Activity overview

Latest activity by Xinshuo Yang

  • Xinshuo Yang commented,

    1. Community
    2. Programming
    3. Suppress console outputs

    Thank you very much.

  • Xinshuo Yang created a post,

    Suppress console outputs

    Answered
    1. Community
    2. Programming

    Hello, How do I suppress all console outputs when using gurobipy.read(...)? Thanks, Xinshuo

    • Xinshuo Yang
    • Edited
    • 3 followers
    • 3 comments
    • 0 votes

  • Xinshuo Yang created a post,

    Retrieve removed variables after presolve

    Answered
    1. Community
    2. Programming

    Is there a way to retrieve the removed variables (especially the binary variables) after presolve for MIP? I assume the values of those variables have been determined by the presovle and should be ...

    • Xinshuo Yang
    • 2 followers
    • 1 comment
    • 0 votes

  • Xinshuo Yang created a post,

    How to make a deep copy of a linear expression using gurobipy

    Answered
    1. Community
    2. Programming

    I need to make changes to my objective function, solve the model and reset the objective function to be the original one. Since my objective function is a LinExp, I was wondering how to make a deep...

    • Xinshuo Yang
    • 2 followers
    • 1 comment
    • 0 votes

  • Xinshuo Yang commented,

    1. Community
    2. Algorithms
    3. multiple scenario model running time

    What also confused is that solving the base model (use the MIPstarts but not make it a multiple-scenario model) took about 0.2 seconds while in the multiple-scenario model solving one scenario coul...

  • Xinshuo Yang created a post,

    multiple scenario model running time

    Answered
    1. Community
    2. Algorithms

    I am using GUROBI multiple-scenario model to solve a MIP with small perturbations from a base model. I know the solution to the base model. So I use var.VarHintVal or var.Start (not both) to guide ...

    • Xinshuo Yang
    • Edited
    • 2 followers
    • 3 comments
    • 0 votes

  • Xinshuo Yang created a post,

    MIP with infinite number of feasible solutions

    Answered
    1. Community
    2. Algorithms

    I have a MIP where two continuous variables x and y are equivalent. So in the solution the sum (denoted by s) of x and y is determined/fixed, but there are infinite many choices of feasible solutio...

    • Xinshuo Yang
    • 2 followers
    • 1 comment
    • 0 votes

  • Xinshuo Yang commented,

    1. Community
    2. Programming
    3. Checking new RHS in multiple Scenarios

    That makes sense. Thank you.

  • Xinshuo Yang created a post,

    Checking new RHS in multiple Scenarios

    Answered
    1. Community
    2. Programming

    I am using the multiple scenario Gurobi model in Python where in one of the scenarios I changed the RHS by: constr.ScenNRHS = new_RHS   Now I would like to see whether this change has been success...

    • Xinshuo Yang
    • Edited
    • 2 followers
    • 2 comments
    • 0 votes

  • Xinshuo Yang created a post,

    Sensitivity analysis for input parameter in LP

    Answered
    1. Community
    2. Feature Requests

    Does GUROBI support sensitivity analysis for input parameters in LP model?

    • Xinshuo Yang
    • 2 followers
    • 1 comment
    • 0 votes