e = neterr(w, net, x, t) [e, varargout] = neterr(w, net, x, t)
e = neterr(w, net, x, t) takes a weight vector w and a network
data structure net, together with the matrix x of input
vectors and the matrix t of target vectors, and returns the
value of the error function evaluated at w.
[e, varargout] = neterr(w, net, x, t) also returns any additional
return values from the error function.
netgrad, nethess, netoptCopyright (c) Ian T Nabney (1996-9)