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load -ascii nursery [N, m] = size(nursery); class = N rand('state',0); randn('state',0); nursery = nursery(:,randperm(m)); Napp = 8500 Ntest = m-Napp app = nursery(:,1:Napp);size(app) test = nursery(:,Napp+1:end);size(test) unique(app(class,:)) unique(test(class,:)) ns = max(nursery') clear nursery % N, ns(class), Napp, Ntest, mean(ns),