dloglikelihood_snn.m

神经网络的工具箱, 神经网络的工具箱,

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



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