John Raphy Karippery

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Recent activity by John Raphy Karippery Recent activity Votes
  • Solving Nonlinear Integer model with Gurobi

    Ongoing

    Hello, I am trying to implement a single optimization vehicle platooning problem in the most straightforward way to approach a nonlinear integer program (INLP).  The result I got from the model doe...

  • Model Infeasible by solving multi-objective model

    Answered

    Hello,I am solving a multi-objective model using the epsilon constrain method. but my code is not working. after using the epsilon method model become infeasible.  is that possible to use epsilon c...

  • How convert GAMS to Gurobi?

    Answered

    Hello,I am trying to convert GAMS model to Gurobi. here I attached  more details below:I have already converted set parameters,variables and tables  power = ["Lignite", "Oil", "Gas", "RES"]load = [...

  • Epsilon constraint with a bi-objective mathematical model

    Answered

    Hello,I looking for an example code for epsilon constrain in gurobi. I didn't find any code yet the definition of e-constraîn is if you want to consider the first objective function as the main obj...

  • Generate multidict using for loop in Gurobi

    Answered

    I would like to generate multidict in Gurobi. inputs: from gurobipy import *number_of_vehicles = 2 vehicles_origin = [4, 6]vehicles_destination = [3, 0]total_time_vehicle = [35, 27] I would like to...

  • How to ensure truck leaves from starting node?

    Answered

    Hello developer,In my model, I need a constrain to ensure the truck leaves from starting node.I already ask almost the same question before with that solution I made some modifications. Now I got a...

  • how to get time value from multidict to my objective function?

    Answered

    Hello developer,I need to create a variable with truck, location, time. I use multidict() for my parameter. set_truck = ["trucks1","trucks2","trucks3"]location, cost, time= gp.multidict({("A", "B")...

  • How to find is any truck share same edge in same time?

    Answered

    Hello, This is just a continuation of the question How to model all truck  the same speed in a path? ensure is any trucks share the same road segment will make platoon (at the same time, same edge,...

  • How to model all truck in same speed in a path?

    Answered

    Hello, Here I am trying to model a constrain that "ensure all truck Drive at the same speed throughout platoon". Here I have a set of parameters like location and set_speed location, set_speed= gp....

  • How to create input variable to my Vehicle platooning problem?

    Answered

    Hello, I'm new to Gurobi and not a really good programmer. I need to model a Multi-objective vehicle platooning problem. I created a mathematical model. I need to verify my model with Gurobi.After ...