Yu yue
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Activity overview
Latest activity by Yu yue-
Yu yue commented,
Hi Jaromił, This method is really great, it solved my problem.Thank you very much! Best regards, Yu
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Yu yue commented,
Hi David， Thank you very much，it worked！ I have one more question, if a is not a decision variable（a∈[1,10]）， b is a decision variable. Can it still be solved in this way? Best regards, Yu
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Yu yue commented,
Hi Jaromił, I failed to understand the Community Post you recommended to me(use a decision variable as an index). Perhaps my description was not clear and I would like to recount my problem in the ...
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Yu yue created a post,
How to add such an indicator constraints? if a=b then c<d else c>d
AnsweredI would like to add this instruction constraint: if a=b then c<d else c>d when a=b → k =1 a !=b → k =0 I know how to handle such situations if a<b then c<d else c>d But I'm confused about how...
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Yu yue commented,
Hi Matthias, Thanks, this is very helpful to me. Best regards, Yu
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Yu yue commented,
Hi Jonasz， I'm sorry I didn't think carefully about the method you proposed, and I did the calculation again using your method. It worked. Thank you very much! Yu
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Yu yue commented,
This is my objective function： My code is as follows： m = gp.Model("MCIkRP1")K = [k.no for k in orders] P = [p.no for p in paths]T = [t for t in range(1, 60)]x = m.addVars(K, P, vtype=GRB.INTEGE...
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Yu yue commented,
Sorry, I didn't describe the problem I encountered clearly. I would like to solve the following problem， Cargo k starts shipping at time and arrives at time. The start time is known (represents ...
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Yu yue created a post,
How to take the remainder of the variables in gurobi？
AnsweredHi，I want to take the remainder of the variable. for k in orders: m.addConstr(t[k.no] % 7 + 1 == k.rk % 7) t is the decision variable. But it returns the following error TypeError: unsup...
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Yu yue created a post,
Comparing variables with constants when adding an objective function
AnsweredI want to set the following objective function： and it contains the condition that where is the decision variable. My code is as follows dep_1 = gp.quicksum((k.hk * h[k.no, t] for k in orders...