traindata.m

这是用matlab编的谱聚类程序

function [trainx,trainy]=traindata(x,y,nmsapmle,nbCluster)

[xid]=find(y==1);
trainx=randn(size(xid,1),nbCluster);
trainx=x(xid,:);
trainy=y(xid);
trainx=trainx(1:nmsapmle(1),:);
trainy=trainy(1:nmsapmle(1),1);

[xid]=find(y==2);
trainx2=randn(size(xid,1),nbCluster);
trainx2=x(xid,:);
trainy2=y(xid);
trainx2=trainx2(1:nmsapmle(2),:);
trainy2=trainy2(1:nmsapmle(2),1);
trainx=[trainx;trainx2];
trainy=[trainy;trainy2];

[xid]=find(y==3);
trainx3=randn(size(xid,1),nbCluster);
trainx3=x(xid,:);
trainy3=y(xid);
trainx3=trainx3(1:nmsapmle(3),:);
trainy3=trainy3(1:nmsapmle(3),1);
trainx=[trainx;trainx3];
trainy=[trainy;trainy3];

[xid]=find(y==4);
trainx4=randn(size(xid,1),nbCluster);
trainx4=x(xid,:);
trainy4=y(xid);
trainx4=trainx4(1:nmsapmle(4),:);
trainy4=trainy4(1:nmsapmle(4),1);
trainx=[trainx;trainx4];
trainy=[trainy;trainy4];