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Anna
Posts:
4
Registered:
4/10/13


Re: Fmincon: nonlinear binary problem
Posted:
Apr 11, 2013 6:55 AM


I was just thinking that all these 3 constraints can be written as one
x_ik+x_jk>=2*z_ijk, right?
"Torsten" wrote in message <kk60l8$l9i$1@newscl01ah.mathworks.com>... > Because you substitute x_ik*x_jk = min(x_ik,x_jk) , I think you will need z_ijk: > z_ijk <= x_ik > z_ijk <= x_jk > z_ijk >= x_ik + x_jk  1
Good point Torsten. Theoretically, I would need to index z over k but from other constraints I also know that there may be at most one k for which z_ijk=1 and I don't need to know the detailed information which k it is, but only the indication whether it happens at all. Would indexing z_ij be correct in that case? It's important to me to limit the size of the variables as well.
Regards, Anna



