detreeexp53.m

具有图形操作界面的支持向量机多类分类实验系统.全部用Matlab实现,可以实现多种分类识别. 这是本人的毕业设计的附属程序

global data textdata numobs
global  x y j quadclass tree
global dtnum dtnode dtclass 
global  grpnum node grpname
 
tree = treefit(data(:,1:2), textdata);
[dtnum,dtnode,dtclass] = treeval(tree, data(:,1:2));
bad = ~strcmp(dtclass,textdata);
numobs = size(data,1);
sum(bad) / numobs

%% We use the same technique as above to visualize the regions assigned to each textdata.
% 
[grpnum,node,grpname] = treeval(tree, [x y]);
gscatter(x,y,grpname,'grb','sod')
xlabel('Age');
ylabel('Risk Value');
hold on;
plot(data(bad,1), data(bad,2), 'kx');
hold off;