Topic
1 reply Latest Post - ‏2013-05-20T22:17:04Z by PaulRubin
tchesa17
tchesa17
3 Posts
ACCEPTED ANSWER

Pinned topic how to programme an objective function and constraints

‏2013-05-18T17:19:39Z |

 

Hello, 

It's my first time working with CPLEX studio IDE and I need your help with an objective function and one constraint.

Could please tell how we write these two in CPLEX 

Minimize (∑(i=1 to m) max{Wi-(1+β) W ,(1+β) W -Wi,0 }) / W 

subject to 

⌈(∑(p=1 to v)∑(j=1 to n) Xikpj)/(Nsk )⌉=Yik      i∈I,k∈Z    \  with  Yik = the  upper integer  part of the result 

Thank you

  • PaulRubin
    PaulRubin
    41 Posts
    ACCEPTED ANSWER

    Re: how to programme an objective function and constraints

    ‏2013-05-20T22:17:04Z  in response to tchesa17

    First, when you say "write these two in CPLEX", do you mean in OPL (the modeling language that ships with the IDE), or do you mean write them in a form that you can type into the interactive optimizer, or do you mean write them in C/C++/Java/Python/MATLAB using the Concert interface? (I'm guessing you meant OPL, but the question is ambiguous, as CPLEX is not a language.)

    Second, which symbols are variables and which are parameters?

    Third, which if any variables are restricted to integers (may make a difference in how the constraint is written)?

    Paul