Originally posted by: geffer

if I have one-dim array variable y[]
when need to create a limit that the two-dim array variable x[yi][yi+1]==1, how to realize this function in c++ concert cplex? or It is impossible to code on cplex internal.
thx

allen
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Originally posted by: SystemAdmin

Basically, what you want is an operation not supported by mathematical programming in general, not just CPLEX. It is perfectly fine if you are writing a constraint programming model (such as with CP Optimizer). You can do what you have in mind in a mixed integer program, but it will take a large number of additional constraints and binary variables. Basically, you end up with a binary variable for each combination of a slot in y and a possible value for that slot ("is y[i] equal to j?") and a constraint on x for each index i and each pair of possible values of y[i] and y[i+1].

Paul

Mathematicians are like Frenchmen: whenever you say something to them, they translate it into their own language, and at once it is something entirely different. (Goethe)
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Originally posted by: geffer

thanks for your reply
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#DecisionOptimization