constraint
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Rahaf
Sep 26, 2021, 3:24:58 AM9/26/21
to AMPL Modeling Language
Hi,I have 3 services I want to
give each server the same constraint but I I don’t know how I can do
that by AMPL . I will write the constrains three times for each server
but how I can it know for the first server and the second server, etc.
AMPL Google Group
Sep 27, 2021, 2:26:18 PM9/27/21
to AMPL Modeling Language
The expression for your variable,
is not standard mathematical notation, so I can only guess as to the constraint that you want to express. Is M the set of servers? Then you might want to define a constraint for each server like this:
subject to Severs {a in M}:
sum {lambda in W} sum {t in BrPsi} sum {d in BrM} x[lambda,t,d,a] = 1;
You would probably need to modify this statement, however, so that it is consistent with the names that you give to your sets, and with the definition of variable x.
is not standard mathematical notation, so I can only guess as to the constraint that you want to express. Is M the set of servers? Then you might want to define a constraint for each server like this:
subject to Severs {a in M}:
sum {lambda in W} sum {t in BrPsi} sum {d in BrM} x[lambda,t,d,a] = 1;
You would probably need to modify this statement, however, so that it is consistent with the names that you give to your sets, and with the definition of variable x.
--
Robert Fourer
am...@googlegroups.com
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