
Difference of cost functions in optimization?
Posted:
Feb 21, 2013 6:16 AM


Hi everyone,
I'm working quite a long time with lsqnonlin and comparable functions but now I'm wondering if there's a difference between the following two expressions of the cost function:
First: f = [0,1]; function error = objFcn(p, x, y) fit = zeros(size(ydata)); for i = 1:size(ydata, 1) fit(i,:)= p(1)*x + f(i)*p(2); end error = fity; end
And, secondly: function error = objFcn(p, x, y) fit = zeros(size(ydata)); fit(1,:)= p(1)*x; fit(2,:)= p(1)*x + p(2); error = fity; end
I would really appreciate any help and possible explanations.
Thanks a lot,
Pascal

