solvelin.m

来自「模式识别 MATLAB 的工具箱,比较实用,包括SVM,ICA,PCA,NN等等」· M 代码 · 共 30 行

function [w,b] = solvelin(p,t)
%SOLVELIN Design linear network.
%	
%	[W,B] = SOLVELIN(P,T)
%	  P - RxQ matrix of Q input vectors.
%	  T - SxQ matrix of Q target vectors.
%	Returns:
%	  W - SxR weight matrix.
%	  B - Sx1 bias vector.
%	
%	SOLVELIN(P,T)
%	Returns SxR weight matrix for network without biases.
%	
%	See also NNSOLVE, LINNET, SIMLIN, INITLIN, LEARNWH, ADAPTWH, TRAINWH.

% Mark Beale, 1-31-92
% Copyright (c) 1992-94 by the MathWorks, Inc.
% $Revision: 1.1 $  $Date: 1994/01/11 16:29:13 $

if nargin < 2,error('Not enough arguments.'),end

if nargout <= 1
  w= t/p;
else
  [pr,pc] = size(p);
  x = t/[p; ones(1,pc)];
  w = x(:,1:pr);
  b = x(:,pr+1);
end