drelerr_snn.m

神经网络的工具箱, 神经网络的工具箱,

function df_da = drelerr_snn(a, t)
%DRELERR_SNN 1st derivative of RELERR_SNN.
%
%  Syntax
%
%    df_dy = drelerr_snn(y0, t0)
%
%     y0    - output
%     t0    - target
%     df_dy - derivative of RELERR_SNN(y,t) with respect to y
%             in (y0, t0)
%
% See also
%
%   RELERR_SNN
%


df_da = (a./t - 1)./t;