ibtissam labriji
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Latest activity by ibtissam labriji
ibtissam labriji created a post,
If constraints
Hello, I am working on a MILP where i want to add the following constraint: I have two variables o[i] that is binary and f[i] that is continuous. I added the following constraint : m.addGenConstr...

ibtissam labriji commented,
Hello Richard, Thank you for your response. Yes it does the trick. Although, I think that : the range should go to 5. So that y_4 can be taken into consideration : m.addConstrs(i*y_i <= M for i i...

ibtissam labriji created a post,
a Variable which is the upper bound of a sum
AnsweredHello, I would like to know if it is possible to model the following expression in gurobi and if gurobi is able to solve it: M is an integer variable that takes value 1, 2, 3 or 4. This variable...

ibtissam labriji created a post,
How to model the indicator function in Gurobi
AnsweredHello, I would like to model the following constraint : f_r are problem variables declared as follows : for i in range(R): f[i] = m.addVar( lb=0.0, vtype=GRB.CONTINUOUS, name="CPU frequency"...

ibtissam labriji commented,
Hello Eli, Thank you for your response ! Indeed it worked. I do have one quick question, though : Is there any difference between gp.quicksum() and quicksum() ? Because I remember using quicksum(y...

ibtissam labriji commented,
Hello Elli, I have a question regarding the minimization of a multivariate function : Actually, I used the same code as you suggested but with the objective to minimize sum( x[i] log(x[i])) inste...

ibtissam labriji commented,
Hello Yuriy, Thank you for your response. Indeed, the solution was to rescale the units of the variables I have. Now I don't get the warning message anymore. Also, as far as I understand , some c...

ibtissam labriji created a post,
Reliable Results ?
AnsweredHello, When I run my optimization problem I get results but I wonder to what extent the results I get are reliable, especially that I receive this warning: Warning: Model contains large rhsConsider...

ibtissam labriji created a post,
Optimization
AnsweredHello, I have a question about an optimization problem and I don't know if it is the right place to ask. The problem is to optimize more specifically minimize a quantity that is a combination of b...

ibtissam labriji commented,
Hello Silke, Indeed it is working ! Thank you. Best Regards, Ibtissam