fwd.m

来自「SVM在MATLAB下的实现,其中有五个文件夹」· M 代码 · 共 56 行

function y = fwd(net,x)

% FWD
%
% Compute the output of a support vector classification network.
%
%    y = fwd(net, x);
%
% where x is a matrix of input patterns, where each column represents a 
% variable and each row represents and observation.

%
% File        : @svc/fwd.m
%
% Date        : Tuesday 12th September 2000
%
% Author      : Dr Gavin C. Cawley
%
% Description : Part of an object-oriented implementation of Vapnik's Support
%               Vector Machine, as described in [1].
%
% References  : [1] V.N. Vapnik,
%                   "The Nature of Statistical Learning Theory",
%                   Springer-Verlag, New York, ISBN 0-387-94559-8,
%                   1995.
%
% History     : 17/08/1999 - v1.00 
%               12/09/2000 - v1.01 minor improvments to comments and help
%                                  messages
%
% Copyright   : (c) Dr Gavin C. Cawley, September 2000.
%
%    This program is free software; you can redistribute it and/or modify
%    it under the terms of the GNU General Public License as published by
%    the Free Software Foundation; either version 2 of the License, or
%    (at your option) any later version.
%
%    This program is distributed in the hope that it will be useful,
%    but WITHOUT ANY WARRANTY; without even the implied warranty of
%    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
%    GNU General Public License for more details.
%
%    You should have received a copy of the GNU General Public License
%    along with this program; if not, write to the Free Software
%    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
%

w = repmat(net.w, size(x,1), 1);

y = sum((w.*evaluate(net.kernel,x,net.sv))') - net.bias;

y = y';

% bye bye...