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Hello, I have posted this question in the 'Syntax' section, but I have not received any answer yet. Any way, this is the subproblem; sub.JPG And by assuming the following terminology and knowing that the subproblem does not need the feasibility cuts, the master is shown below; master.JPG And here is...

Hello, I have coded the Benders decomposition for the following problem. This is the subproblem; ss.JPG sss.JPG And by assuming the following terminology and knowing that the subproblem does not need the feasibility cuts, the master is shown below; ssss.JPG master.JPG And here is my code; ** benders...

Thanks a lot.

Hello, I need to define the parameter "f" and variable "x" over the dynamic set "j", and the parameter "d" over the dynamic set "a". For this, I do as follows; Sets k /0*24/ i(k) /0*24/ q /1*300/ s /0*23/ t /1*24/; Set j(q,s,t) / $ondelim $include A-...

Thank you.

Thank you for your reply.
But if I define it as a parameter, then I cannot use syntaxes such as, "for" or "loop".
Moreover, Would you please give me some hints on How I can define a subset for multi-dimensional sets?

Hello everybody, I have the following CSV file, it is like an array with four entries "(i, s, t, f)", in which "i" is the indicator and "s, t, f" are its assigned values. for this, I have written the next code. Sets i /1*300/ s /0*23/ t /1*24/; Sets x(i,s,t) / $ondelim ...

I know that, but in the problem "x" is defined over both "i" and "k". How can I fix this issue?

This is the code by declaring set R_q, a as "i". Sets k /1*25/ q /1*86/ a /1*86/ i /1*10/ ; Variable o; Binary Variables x(k) y(a,q,i) z(q); Parameters p f_ev(q) d(q) f_phev(q) d(q); p = 3; $ call gdxxrw Data.xlsx par d rng=edges!A1:B86 rdim=1 cdim=0 $ gdxin Data.gdx $ load d $ gdxin $ cal...

Hello, I have written the following model, but I have some problem. My problem related to defining sets K_q,a and R_q,a. When I define these sets I get some errors concerning the variable x. I really need help. model.JPG This is my code. Sets k /1*25/ q /1*86/ a /1*86/ ; alias(i,k); Variable o; Bina...