# addition of two matrix's with constraints

1 view (last 30 days)
reshdev on 13 Sep 2014
Commented: Andrei Bobrov on 13 Sep 2014
Hello,
i have following code which i want to modify ....
function new_fitness
W =[0 0 0 3;0 0 0 0;0 0 0 0; 3 0 0 0 ];
cost=[1 1 1 1;1 1 1 1;1 1 1 1;1 1 1 1];
FC= [10 10 10 10;10 10 10 10;10 10 10 10;10 10 10 10];
Fn = cost.*W+(W>0).*FC
disp(Fn);
end
my output is---
Fn =
0 0 0 13
0 0 0 0
0 0 0 0
13 0 0 0
but i want to modify it such a way that particular FC element is added only once if both W(i,j) and W(j,i)>0. then my output will be like---
Fn =
0 0 0 13
0 0 0 0
0 0 0 0
3 0 0 0
Thank You

Andrei Bobrov on 13 Sep 2014
out = W.*cost;
[ii,jj] = find(W > 0);
ij = sortrows([ii,jj]);
jj = sub2ind(size(W),ij(1,1),ij(1,2));
out(jj) = out(jj) + FC(jj);
Andrei Bobrov on 13 Sep 2014
Wt = W.';
t1 = W > 0 & Wt == 0;
t2 = W > 0 & Wt > 0;
Fn(t1) = Fn(t1) + FC(t1);
Fn(t2) = Fn(t2) + FC(t2)/2;

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