Questions tagged [opl]
OPL is a modeling language for mathematical programming and combinatorial optimization problems. It is the first modeling language to combine high-level algebraic and set notations from modeling languages with a rich constraint language and the ability to specify search procedures and strategies that is the essence of constraint programming.
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Information about number of simplex and barrier iterations in OPL CPLEX
I would like to know how can I obtain the exact number of simplex and barrier iterations used by CPLEX in OPL. The solution reports the total number of iterations but I want them to be separated (...
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Array of string in OPL
how to make 2d array of strings in Cplex
//indics
{string} cluster=...;
setof(string) darkstore =...;
setof(string)demandpoint =...;
//data
cluster={chav,sree};
demandpoint=[{tsnami,adholokam,...
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CPLEX OPL - Problem of arrangements and increments
I have a problem involving work shifts and assembly stations.
Work shifts have the subscript = T
Workstations have the subscript = J
My decision variable is X[t][j]
For each turn (T) I am trying to ...
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Tuples OPL in VRP
I am trying to build a constraint of the form x[i j] +x[j i] <y[i][j] where x is a decision variable if arc ...
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CPLEX oplrun says the problem size has exceeded, but then proceeds to solve the problem anyway
I have downloaded and installed the CPLEX Studio Community Edition 20.1.0.0 on my Linux machine (KUbuntu). I want to use the oplrun tool directly from the terminal. ...
- 3,980
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Operator error in operating cost model constraint
I have built a model to minimize the operating cost and when I coded a model in CPLEX, it gave an error at Cons09: ...
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Book recommendations on OPL
Are there any good books that teach how to work with OPL in CPLEX? I searched but I didn't find any.
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Why some decision variables don't get values in Cplex?
I use this code in the cplex and don't know why some decision variables don't get value, I attach my code below. I don't know my model is wrong or my code? I haven't error in the code but have some ...
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How define variable in CPLEX and What is diffrence between decision variables and variable in CPLEX
I want to code a problem by CPLEX, in this problem I have variables and decision variables, how define them?
In this picture you can see the variables:
which we have:
I use these codes for variables:...
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Coding the OR problem with cplex
I am new to using OPL. I wrote a CPLEX code for the vaccine distribution from a paper, it doesn't get an error, but it hasn't given the answer. I don't know its problem; please help me; I attached the ...
- 3,980
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Get array of sequences for array of interval arrays in OPL
So I want to define multiple sequences (an array of them).
I have this:
...
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