MATLAB: How to vectorize this

Question

It seems I dont understand sth about vectorization.

Aj = zeros(1, jCount);   % it is filled in reality, but here I just swoh the size
uj = zeros(K, jCount);   % as above
for angle = 1:K
   currentUj = uj(angle, :);
   beta(angle) = sum(Aj.*currentUj);
end

Can somebody show me how to vectorize this, so I can learn what I do wrong?

Best regards, Alex

Answer 1

This does that same as your loop:

 beta = sum(bsxfun(@times,Aj,uj),2).';