netgrad.m

有关kalman滤波及其一些变形滤波算法

function g = netgrad(w, net, x, t)
%NETGRAD Evaluate network error gradient for generic optimizers
%
%   Description
%
%   G = NETGRAD(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 gradient of the error
%   function evaluated at W.
%
%   See also
%   MLP, NETERR, NETOPT
%

%   Copyright (c) Ian T Nabney (1996-2001)

gradstr = [net.type, 'grad'];

net = netunpak(net, w);

g = feval(gradstr, net, x, t);