(size(data,1));
N = length(idx);
% SVM train
T = floor(N*0.9); % 90组数据作为训练数据
xdata...= data(idx(1:T),:);
xgroup = group(idx(1:T));
svmStr = svmtrain(xdata,xgroup,'Showplot',true);
训练过程得到结构体...然后讨论C的影响,程序代码如下:
% different C
figure;
C = 1;
svmStr = svmtrain(xdata,xgroup,'kernel_function','rbf',...C,'showplot',true);
title('C = 0.1');
figure;
C = 8;
svmStr = svmtrain(xdata,xgroup,'kernel_function'...C,'showplot',true);
title('C = 1');
figure;
C = 64;
svmStr = svmtrain(xdata,xgroup,'kernel_function',