%PREX_MATCHLAB PRTools example on K-MEANS clustering and matching labels
%
% Illustrates the use of K-MEANS clustering and the match of labels.
help prex_matchlab
delfigs
randstate = randreset;
echo on
rand('state',5); % Set up the random generator (used in K-MEANS)
a = iris;
% Find clusters in the Iris dataset
J1 = prkmeans(a,3);
% Find about the same clusters, but they are
J2 = prkmeans(a,3);
% labeled differently due to a random initialization.
confmat(J1,J2);
% Match the labels. 'Best' rotation of label names
[J3,C] = matchlab(J1,J2);
% since the confusion matrix is now almost diagonal.
confmat(J1,J3);
% Conversion from J2 to J3: J3 = C(J2,:);
C
echo off
randreset(randstate);