BISWAJIT KAR

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Activity overview

Latest activity by BISWAJIT KAR

  • BISWAJIT KAR created a post,

    Benders Decomposition, Column Generation

    Answered
    1. Community
    2. Algorithms

    Is it possible for me to use Gurobi for solving the Problem with column generation or benders Decomposition? Or so I have to code that myself?

    • BISWAJIT KAR
    • 2 followers
    • 1 comment
    • 0 votes

  • BISWAJIT KAR commented,

    1. Community
    2. Modeling
    3. How to raise the power of a variable?

    Hi Jaromił Najman, I am very grateful to you for the clarification that you have provided.  I am afraid that the question is an assignment problem and it cannot be changed. But I want to thank you ...

  • BISWAJIT KAR created a post,

    Solving a non linear Programming and not getting results

    Awaiting user input
    1. Community
    2. Programming

    Dear Gurobi User Community, I have been trying to solve a nonlinear Programing, But for every question that I am introducing m.addGenConstrPow(), I am getting a confusion. I am attaching a question...

    • BISWAJIT KAR
    • 2 followers
    • 1 comment
    • 0 votes

  • BISWAJIT KAR commented,

    1. Community
    2. Programming
    3. Float exponent of a variable

    Dear Zed Dean, Thanks a lot for your response. The above question is just an example. I am solving similar questions. I am still getting a bit confused. So, is the following how the code is suppose...

  • BISWAJIT KAR commented,

    1. Community
    2. Modeling
    3. How to raise the power of a variable?

    Hi Jaromił Najman, I have mentioned one objective and one constraint. I am sharing the code now m=gp.Model('Matelco')x1=m.addVar(vtype=GRB.CONTINUOUS, name ='x1')x2=m.addVar(vtype=GRB.CONTINUOUS, n...

  • BISWAJIT KAR created a post,

    Float exponent of a variable

    Ongoing
    1. Community
    2. Programming

    if the objective function is  x^0.2+y^0.4 the n how to solve such problems? Do we still have to introduce auxiliary variable and constraint?

    • BISWAJIT KAR
    • 3 followers
    • 3 comments
    • 0 votes

  • BISWAJIT KAR created a post,

    How to raise the power of a variable?

    Answered
    1. Community
    2. Modeling

    I have to solve a Non linear problem, with one constraint. The objective function goes like 10*x1^4+8*x2^5+12*x3^3+16*x4^6 Constraint is x1+x2+x3+x4<=100 For solving this I have introduced 8 au...

    • BISWAJIT KAR
    • 2 followers
    • 4 comments
    • 0 votes

  • BISWAJIT KAR created a post,

    Float exponent in Non Linear Programming

    Answered
    1. Community
    2. Modeling

    I have to solve the following NLP. I am solving NLP in Gurobi for the first time, and I am facing some issues. While solving this, I have used all the things that I am aware of,    import math as ...

    • BISWAJIT KAR
    • Edited
    • 3 followers
    • 2 comments
    • 0 votes

  • BISWAJIT KAR created a post,

    Solving a non linear Programming

    Answered
    1. Community
    2. Modeling

    How do I solve this using Gurobi? Kindly reply.

    • BISWAJIT KAR
    • 2 followers
    • 1 comment
    • 0 votes

  • BISWAJIT KAR created a post,

    Why does the model not converge to a solution?

    Answered
    1. Community
    2. Modeling

    This is a screenshot of the running problem. It's been stuck in the 18.4% for quite some time. Why dies this happen? 

    • BISWAJIT KAR
    • 3 followers
    • 2 comments
    • 0 votes