Hi,
could you clarify in what way you want to reuse the solution?
Here's a combinator that first minimizes obj1, then maximizes obj2 keeping obj1
at the optimal value:
annotation two_stage_bnb(var int: obj1, var int: obj2, ann: s) =
let { svar int: best1 = 1000000,
svar int: best2 = 0 }
in (
portfolio([and(post(obj1 < lv("best1"), and(s,assign(best1,obj1))),
prune),
post(obj1=lv("best1"),
post(obj2 > lv("best2"), and(s,assign(best2,obj2)))
)]));
Cheers,
Guido
On 9 Mar 2014, at 9:43 am, Mohamed Rezgui <[email protected]> wrote:
> Dear Sir,
>
> I would like to know how can I use searchcombinators in my
> multi-objective model in FlatZinc.
> I have 2 objectives. I minimize the first and I reuse the solution for
> the minimization of the second objective.
> Can you give me the good syntax in FlatZinc with searchcombinators to
> do that please ?
>
> Best Regards,
> Mohammed REZGUI
> PhD Student
>
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