Jordi Kortekaas
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Latest activity by Jordi Kortekaas-
Jordi Kortekaas created a post,
A problem with the solution printing and objective value, please help!
AnsweredHello, for my bachelors thesis that is due in a week, i am working on an MILP for a heterogenous CVRP and I am running into a slight problem and am not quite sure what I should do to fix it. The MI...
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Jordi Kortekaas created a post,
My model is infeasible, i have found the constraint which is causing it but i can\t find out what the reason is.
AnsweredHi, Currently, I am working on a heterogeneous CVRP MILP. The code i have runs for the homogeneous cases however, in the case of heterogenous vehicles, it does not. The model becomes in feasible...
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Jordi Kortekaas commented,
Hi Jaromil, This is my IIS: \ Model CVRP_copy\ LP format - for model browsing. Use MPS format to capture full model detail.Minimize Subject To LoadAfterVisit_11_20_3: - 1100 C1701 - C3663 + C371...
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Jordi Kortekaas commented,
Hi Jaromil, I have tried some things and have gotten the code to work in the case of a single vehicle type for both the cars and tractors, however, in the case that both vehicles get used it seems...
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Jordi Kortekaas created a post,
My model does not find a single solution, even if the time limit is set to high numbers.
AnsweredHello, i am currently trying to solve a MILP for a HCVRP in python. My MILP model is not infeasible but does not provide a solution, even if there are only 25 nodes. I am trying to find out whats w...
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Jordi Kortekaas created a post,
My model is infeasible. Can someone please help me?
AnsweredHi, i currently have the following code for an MILP program modelling a CVRP situations with multiple vehicles. My model does not run because it is infeasible, however I am not quite sure why it sh...
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Jordi Kortekaas commented,
Hi Riley, I have, and it is not necessarily that it does not try to optimize the objective function. It does not find a solution, as the solution count is 0. I cannot find what is wrong. The variab...
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Jordi Kortekaas created a post,
My model does not work right, can someone help me?
AnsweredHello, currently i am trying to automize validating my solution of a Capacitated Vehicle Routing Problem of an Ant colony optimization algorithm. The code runs and gives me a solution, however, whe...
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Jordi Kortekaas commented,
yes, but still it is not very clear to me what is wrong the ISS: \ Model CVRP_copy\ LP format - for model browsing. Use MPS format to capture full model detail.Minimize Subject To R7: C12 + C13 + ...
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Jordi Kortekaas created a post,
My model is infeasible. Can someone please help me?
AnsweredHello, my code should model the real-life situation of visiting moisture level sensors. Some of these sensors are at the same location as the depot and therefore my distance matrix seems a bit weir...