solveout2.m

NNDemo2.0是对神经网络实验演示系统NNDemo1.0的进一步增强与扩充

function [w,wbias] = solveout2(g,t)
%隐层到输出层的权值
% g为np×m的隐含层的输出矩阵
% t为np×no的期望输出矩阵
% w为m×no的权值矩阵
% wbias为1×no的偏值向量
if nargin < 2,error('Not enough arguments.'),end

if nargout <= 1
  w= inv(g'*g)*g'*t;
else
  [np,m] = size(g);
  y = [g'; ones(1,np)]';
  x=inv(y'*y)*y'*t;
  w=x(1:m,:);
  wbias=x(m+1,:);
end