John Raphy Karippery

Hello Jaromił, Thank you so much for the replay. how to set model sense to objective.here motive of objective.   objcost 'objective for minimizing cost in K$' objco2 'objective for minimiz...

hello Matthias,Is that possible to implement  ϵ-constraint by using Gurobi? Could you please implement any simple model code for me? for reference  https://www.researchgate.net/profile/Naveenbalaji...

Hello Jaromil,Now I am facing a problem. I used so many variables in my model that is not a good idea.How can use the same variable in different constarins?for example:I used p_ij variables for con...

Thank you for your helpI have small changes in the objective function.\begin{equation}\ Min\ Z=\ \sum_t \sum_{e_{i,j}\ \in E}{x_{i,j}t}\end{equation} we have to define a time window for each truck....

Thank you for helping me.I have a lot of confusion with a time parameter.Does that mean the Objective function will be something like this?  mdl.setObjective(quicksum(cost[i,j] * t for i, j in loca...

Still I have syntax error with my objective function why? set_time =[123, 134, 345, 234, 453, 346, 643, 332]mdl.modelSense = GRB.MINIMIZEmdl.setObjective(quicksum(x[i,j,k,t]* cost[i,j] for i,j in l...

Thank you for your reply.value of time is just random Variable : \(x_{i,j,t}^k\) Binary variable=1, if truck  k  traverses edge  e_{ij}  at time tDoes that mean the code will be something like this...

Hi That means the constrain will be. m.addConstrs( gp.quicksum( x[truck][l,v] for v in V ) <= 1 for l in location for truck in trucks)

Hi Jaromił,My task minimizes the cost and time of the Vehicle platooning problem.  currently, I am using random input for making the model. so there is no importance for parameters. we can change b...

Hi Jaromil,Thank you so much for your reply. Yes, you are right both questions for the same task. You and this support page help a lot.    I got an error when I try your code. mdl.addConstrs( gp.q...