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svcoutput.m
Package: SVM--SVM.rar [view]
Upload User: liu_jing
Upload Date: 2013-07-02
Package Size: 4k
Code Size: 1k
Category:
Mathimatics-Numerical algorithms
Development Platform:
Matlab
- function predictedY = svcoutput(trnX,trnY,tstX,ker,alpha,bias,actfunc)
- %SVCOUTPUT Calculate SVC Output
- %
- % Usage: predictedY = svcoutput(trnX,trnY,tstX,ker,alpha,bias,actfunc)
- %
- % Parameters: trnX - Training inputs
- % trnY - Training targets
- % tstX - Test inputs
- % ker - kernel function
- % beta - Lagrange Multipliers
- % bias - bias
- % actfunc- activation function (0(default) hard | 1 soft)
- %
- % Author: Steve Gunn (srg@ecs.soton.ac.uk)
- if (nargin < 6 | nargin > 7) % check correct number of arguments
- help svcoutput
- else
- if (nargin == 6)
- actfunc = 0;
- end
- n = size(trnX,1);
- m = size(tstX,1);
- H = zeros(m,n);
- for i=1:m
- for j=1:n
- H(i,j) = trnY(j)*svkernel(ker,tstX(i,:),trnX(j,:));
- end
- end
- if (actfunc)
- predictedY = softmargin(H*alpha + bias);
- else
- predictedY = sign(H*alpha + bias);
- end
- end