%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 echo on rand('state',5); % Set up the random generator (used in K-MEANS) a = iris; % Find clusters in the Iris dataset J1 = kmeans(a,3); % Find about the same clusters, but they are J2 = kmeans(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
