classify.m

该文件里面包含了三个AdaBoost算法

%   The algorithms implemented by Alexander Vezhnevets aka Vezhnick
%   <a>href="mailto:[e-mail]">[e-mail]</a>
%
%   Copyright (C) 2005, Vezhnevets Alexander
%   [e-mail]
%   
%   This file is part of GML Matlab Toolbox
%   For conditions of distribution and use, see the accompanying License.txt file.
%
%   Classify Implements classification data samples by already built
%   boosted commitee
%~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
%
%    Result = Classify(Learners, Weights, Data)
%    ---------------------------------------------------------------------------------
%    Arguments:
%           Learners - cell array of weak learners
%           Weights  - vector of learners weights
%           Data      - Data to be classified. Should be DxN matrix, 
%                       where D is the dimensionality of data, and N 
%                       is the number of data samples.
%    Return:
%           Result   - vector of real valued commitee outputs for Data. 

function Result = Classify(Learners, Weights, Data)

Result = zeros(1, size(Data, 2));

for i = 1 : length(Weights)
  lrn_out = calc_output(Learners{i}, Data);
  Result = Result + lrn_out * Weights(i);
end