Yes, the update is definitely wrong, the code you sent should not even
compile, it must be:
listVarMachines[i].update(*this, share,
s.listVarMachines[i]);
instead of
listVarMachines.update(*this, share, s.listVarMachines[i]);
and so on.
Then, do you initialize the variable and integer arrays properly?
Christian
--
Christian Schulte, Professor of Computer Science, KTH,
<http://www.ict.kth.se/~cschulte/> www.ict.kth.se/~cschulte/
From: users-boun...@gecode.org [mailto:users-boun...@gecode.org] On Behalf
Of Holmes Giovanny Salazar Osorio
Sent: Wednesday, April 17, 2013 6:06 AM
To: users@gecode.org
Subject: [gecode-users] Updating Variables stored in a STL-Vector
Hello all,
I have Gecode 3.7.3 on Ubuntu. I'm working in a scheduling problem with
optmization, therefore, I'm using MaximizeScript and the cumulatives
constraint.
Right now, I'm having problems with the cumulatives constraint, because, It
doesn't works properly. I have something like
take into account that: size = listVarMachines.size = listVarTStarts =
listVarTEnds = listDuration = listResources = listMachinesCapacity
for(int i = 0; i < size; i++){
cumulatives(
*this,
listVarMachines[i],
listVarTStarts[i],
listDuration[i],
listVarTEnds[i],
listResources[i],
listMachinesCapacity[i],
true,
ICL_BND);
}
where listVarMachines, listVarTStarts, listVarTEnds are declared in this way
-> vector<IntVarArray> listVar...
And listDuration, listResources and listMachinesCapacity are declared in
this way -> vector<IntArgs> list...
When I force the elements in the vector listMachinesCapacity to take a value
of 1. The program assign more than 1 task at the same time. This is wrong,
because with the Limit of resource equals to 1, the cumulatives constraint
should assign one and only one task in the same unit of time.
I think that the problems is that the cumulatives constraint isn't being
propagated for any reason. And I have doubts with the way in that the
variables are being updated.
In the update function I have something like this:
MyClass(bool share, MyClasss) : MaximizeScript(share, s) {
listVarMachines = s.listVarMachines;
listVarTStarts = s.listVarTStarts;
listVarTEnds = s.listVarTEnds;
for( int i=0; i < size; i++)
{
listVarMachines.update(*this, share, s.listVarMachines[i]);
listVarTStarts.update(*this, share, s.listVarTStarts[i]);
listVarTEnds .update(*this, share, s.listVarTEnds[i]);
}
}
Dou you think that the problem can be the way of I'm updating the variables,
or do you have another idea?
Thank you in advance!. Best regards,
Holmes
--
"El secreto del éxito, está en la disciplina"
Holmes Giovanny Salazar Osorio
Ingeniería de Sistemas
Estudiante 10mo Semestre
Universidad del Valle - Sede Tuluá
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