Chickenpieces

d = chickenpieces('all');
randreset; prcrossval(d{1},knnc([],1),5)

5-fold cross validation error on 446 objects: 0.26906

BrainMRI

d = brainmri;
randreset; prcrossval(d{1},knnc([],1),5)

5-fold cross validation error on 124 objects: 0.45161

Covers Beethoven

d = covers_beethoven;
randreset; prcrossval(d{1},knnc([],1),5)

5-fold cross validation error on 128 objects: 0.6875