Yalmip constraint problem -using function ceil and abs

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StellaWang
StellaWang 2017-1-18
编辑： Stephen23 2017-1-18
I am working on mip problem using yalmip-cplex to solve the problem.
yjt=intvar(T,Nst,'full');
xikt=binvar(n,10,T,'full');
Here is my constraint:
for t=1:T
for k=1:10
Constraint=Constraint+[xikt(:,k,t)==ones(30,1,1)-ceil(abs(Wijt(:,:,t)*yjt(t,:)'-(k-1))/1000)];
end
end
I find that this constraint does not work when I use yalmip cplex to solve the problem. Is this because of the function ceil or abs which I use?Or some other reasons? The same code works fine using GA algorithm.
Appreciate if someone can tell me the reasons and solutions. Thanks.

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