hamza addi
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Posts
Recent activity by hamza addi-
Stochastic formulation
AnsweredHello,I'm working on a deterministic model and i want to step up into the stochastic formulation of the model and then implement it using Gurobi. Can you please tell me whether it's possible with ...
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problem formulation for a production facility
AnsweredI have a production unit for product A divided into four periods of the year: Q1, Q2, Q3, and Q4. The constraints are as follows: Production of product A in each period should not exceed the sum ...
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integrality focus
AnsweredHello, I keep getting non integral values for integral variables anf for continous variables about -1,1E-07 how can i deal with this problem,how can i change the parameters such as In...
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Infeasibility problem
AnsweredHello, I'm solving a MIP problem, I get a infeasibility error, what i can do to check which constraints are violated. and what can i do to solve this issue because i checked the formulation and i...
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Very long execution time for adding constraints
AnsweredHello, I hope everyone is doing fine, I'm trying to add some constraints but it takes so much time over 2 hours and half list1=['x1'+str(i)for i in range(100)]list2=['x2'+str(i)for i in range(100)...
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Problem with model.getAttr("VarName", model.getVars())
AnsweredHello everyone, I'm trying to retrive Names of variables using names=model.getAttr("VarName", model.getVars()) but i get this error bellow, i tried everything online but nothing works for me. Thank...
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Variables names not availables
AnsweredHello, I hope you are doing good, I'm trying to retrive variables names with values but i don't get them in thhe results, i try this : mvars = model.getVars()names = model.getAttr('VarName', mvars)...
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Data from gurobi to Excel using gurobi.getAttr
AnsweredHello, I hope you are doing very well, I want to use the function "model.getAttr()" in order to write data into excel (and not use Var.x with the loops) but i don't see how i can exploit that; I'l...