[gecode-users] Propagating to Fixpoint

Guido Tack tack at gecode.org
Thu Aug 23 12:40:03 CEST 2012


I guess under certain conditions the code that posts the constraints (not the actual propagator) can be stronger than ICL_DEF, in which case this can happen.
If it's not too complicated, could you send us a concrete example?

Cheers,
Guido

-- 
Guido Tack


On 23/08/2012, at 12:08, Max Ostrowski <ostrowsk at cs.uni-potsdam.de> wrote:

> Can the order of propagation influence the final result?
> 
> 
> Given a list of reified constraints L posted with ICL_DEF
> 
> for (i in L)
> {
> i == true;
> status();
> }
> 
> // the space is failed
> 
> Now the same thing with the list sorted by some order
> 
> randomize_order(L)
> for (i in L)
> {
> i == true;
> status();
> }
> 
> // the space not failed
> 
> 
> 
> Can this happen (not using circuit and nvalues) only usign linear
> constraints.
> Why does this happen.
> 
> 
> Best,
> Max
> 
> 
> _______________________________________________
> Gecode users mailing list
> users at gecode.org
> https://www.gecode.org/mailman/listinfo/gecode-users



More information about the users mailing list