Figure 4: Frequency of the seven variables 294_0182, 187_0439, 557_1301, 225_0983, 373_1301, 193_1508 and 396_1508 over different folds in EN, LASSO and SPLS are shown. Variable 294_0182 shows highest number of times selected in all the methods where as 396_1508 selected lowest numbers of times.