Tests on a4a-x-train a4a-y1-train a4a-x-test a4a-y1-test Read 600 items Read 3000 items GP1 hyperparameters: 0.8888 0.4456 GP1 hyperparameters: 1.1625 0.3911 GP1 hyperparameters: 0.9411 0.4709 GP1 hyperparameters: 0.943 0.3848 GP2 hyperparameters: 0.8651 6.2844 0.0513 GP2 hyperparameters: 0.9676 1.9212 0.2887 GP2 hyperparameters: 0.8288 2.2995 0.2246 GP2 hyperparameters: 0.7034 2.5032 0.2911 GP3 hyperparameters: 0.847 1.6012 0.2302 GP3 hyperparameters: 0.9013 0.7606 1.0968 GP3 hyperparameters: 0.8952 2.1613 0.1487 GP3 hyperparameters: 0.7385 0.8852 0.8267 Average squared errors: average mean 2.2519 2.2748 2.2683 2.3078 2.2757 ls 0.8909 0.9931 0.9108 0.9776 0.9431 gp1 0.8742 0.9598 0.8909 0.9580 0.9207 gp2 0.8373 1.1238 0.8130 0.9389 0.9283 gp3 0.8545 1.1723 0.8051 0.9881 0.9550 P-values from paired t tests: mean ls gp1 gp2 gp3 mean NA 0.000 0.000 0.000 0.000 ls 0 NA 0.009 0.786 0.857 gp1 0 0.009 NA 0.897 0.629 gp2 0 0.786 0.897 NA 0.147 gp3 0 0.857 0.629 0.147 NA Tests on a4a-x-train a4a-y2-train a4a-x-test a4a-y2-test Read 600 items Read 3000 items GP1 hyperparameters: 0.2628 0.0457 GP1 hyperparameters: 0.2661 0.1009 GP1 hyperparameters: 0.2701 0.0824 GP1 hyperparameters: 0.2703 0.1008 GP2 hyperparameters: 0.2482 0.421 0.1466 GP2 hyperparameters: 0.2047 0.2234 0.9495 GP2 hyperparameters: 0.1884 0.3287 0.4977 GP2 hyperparameters: 0.2606 0.5975 0.1374 GP3 hyperparameters: 0.226 0.1081 1.1684 GP3 hyperparameters: 0.2459 0.1475 0.7948 GP3 hyperparameters: 0.2113 0.1179 1.23 GP3 hyperparameters: 0.2637 0.7441 0.1045 Average squared errors: average mean 0.0829 0.0828 0.0840 0.0833 0.0832 ls 0.0783 0.0859 0.0829 0.0797 0.0817 gp1 0.0798 0.0804 0.0793 0.0755 0.0788 gp2 0.0732 0.0752 0.0738 0.0742 0.0741 gp3 0.0709 0.0730 0.0713 0.0754 0.0726 P-values from paired t tests: mean ls gp1 gp2 gp3 mean NA 0.434 0.034 0.001 0.002 ls 0.434 NA 0.149 0.012 0.020 gp1 0.034 0.149 NA 0.027 0.055 gp2 0.001 0.012 0.027 NA 0.197 gp3 0.002 0.020 0.055 0.197 NA Tests on a4b-x-train a4b-y-train a4b-x-test a4b-y-test Read 800 items Read 2000 items GP1 hyperparameters: 0.1164 0.1033 GP1 hyperparameters: 0.1089 0.1205 GP1 hyperparameters: 0.1032 0.1077 GP1 hyperparameters: 0.097 0.1255 GP2 hyperparameters: 0.1091 2.2133 0.0347 GP2 hyperparameters: 0.1088 8.2929 0.01 GP2 hyperparameters: 0.1029 7.4646 0.01 GP2 hyperparameters: 0.0958 6.9821 0.0126 GP3 hyperparameters: 0.1137 1.2388 0.0595 GP3 hyperparameters: 0.0981 0.164 0.4692 GP3 hyperparameters: 0.0896 0.0723 1.0483 GP3 hyperparameters: 0.086 0.1513 0.5136 Average squared errors: average mean 0.0538 0.0549 0.0539 0.0540 0.0542 ls 0.0171 0.0163 0.0154 0.0164 0.0163 gp1 0.0176 0.0163 0.0158 0.0161 0.0165 gp2 0.0171 0.0163 0.0157 0.0160 0.0163 gp3 0.0174 0.0168 0.0149 0.0164 0.0164 P-values from paired t tests: mean ls gp1 gp2 gp3 mean NA 0.000 0.000 0.000 0.000 ls 0 NA 0.461 0.861 0.806 gp1 0 0.461 NA 0.208 0.817 gp2 0 0.861 0.208 NA 0.806 gp3 0 0.806 0.817 0.806 NA