Search found 3 matches
- 5 years ago
- Forum: Solvers
- Topic: Impossible to use 'mipstart' in CPLEX
- Replies: 1
- Views: 4830
Impossible to use 'mipstart' in CPLEX
Hi, I have a trouble in using 'mipstart' in CPLEX. As far as I know, in order to activate mipstart, all the values of variables must be set with '.l' before solve statement. But when i do, it always return message 'MIP start 'm1' defined no solution' and 'Warning: No solution found from 1 MIP status...
- 5 years ago
- Forum: Modeling
- Topic: Using same identifier twice in variable.
- Replies: 2
- Views: 3982
Re: Using same identifier twice in variable.
thank you very much! I just learned the 'alias' function. It opens so many possibilities in formulation
- 5 years ago
- Forum: Modeling
- Topic: Using same identifier twice in variable.
- Replies: 2
- Views: 3982
Using same identifier twice in variable.
Hi. I'd like to implement model look like this.
Set
i
Variables
a(i)
b(i)
mult(i,i)
and mult(i1,i2) = a(i1) * a(i2) where i1, i2 are different or same elements of i.
How can i express this equation in GAMS?
Set
i
Variables
a(i)
b(i)
mult(i,i)
and mult(i1,i2) = a(i1) * a(i2) where i1, i2 are different or same elements of i.
How can i express this equation in GAMS?