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Table 14:
Summary of the performance of instance selection methods in terms of testing error and storage reduction for large datasets. Additionally, the measure, the number of selected instances and features, and the execution time are shown.
Standard CHC IS+FSMemetic IS+FS
TrainingTestingInstancesFeaturesTimeTrainingTestingInstancesFeaturesTime
DataseterrorStorageerrorselectedselected(s)errorStorageerrorselectedselected(s)
adult 0.2060 0.0133 0.2090 0.4376 16,609.1 3.7 65,207.2 0.1824 0.0003 0.1850 0.3936 489.5 63,582.9 
euthyroid 0.0235 0.0180 0.0335 0.7732 935 2.4 2,402.4 0.0293 0.0009 0.0301 0.7470 20.7 5.5 1,068.4 
hypo 0.0216 0.0171 0.0279 0.7599 1,006.5 1.7 1,380.4 0.0837 0.0022 0.0899 0.7989 29.4 7.3 840.5 
isolet 0.1629 0.1199 0.2511 0.7485 2,725.4 10.5 4,515.5 0.2149 0.0562 0.2388 0.8299 638 21 4,478.4 
krkopt 0.8335 0.0416 0.8331 0.0329 6,294.1 3,419.4 0.6460 0.0317 0.6569 0.2028 1,265.5 3.8 1,940.6 
krvskp 0.1224 0.0313 0.1254 0.7307 743.7 4.6 2,304.2 0.0823 0.0042 0.0884 0.8714 40.9 10.2 889.3 
letter 0.0999 0.1470 0.1419 0.8736 6,831.4 6.2 5,921.1 0.0786 0.1229 0.0943 0.9521 3,539 10 5,748.6 
magic04 0.1540 0.0730 0.2207 0.4510 6,244.2 3,786 0.1663 0.0103 0.1690 0.5915 418.4 4.2 1,242.9 
mfeat-fac 0.0197 0.0575 0.0370 0.9632 736.1 30.4 5,529.1 0.0621 0.0175 0.0760 0.9559 130 52.2 6,306.9 
mfeat-fou 0.0964 0.0696 0.1585 0.8111 755.7 12.6 1,591.9 0.2028 0.0164 0.2085 0.8061 96.5 23.2 1,920.9 
mfeat-kar 0.0296 0.0664 0.0465 0.9493 670.7 11.4 1,303.8 0.0721 0.0322 0.0940 0.9565 157 24.2 1,663.3 
mfeat-mor 0.2397 0.1529 0.3645 0.5346 590.1 2.8 243.6 0.2742 0.0390 0.3170 0.6019 78.4 5.4 107.5 
mfeat-pix 0.0171 0.0909 0.0355 0.9660 700.7 56.1 6,770.7 0.0493 0.0338 0.0695 0.9671 173.2 84.5 8,306.5 
mfeat-zer 0.1217 0.1176 0.2045 0.7610 682.2 14.6 1,526.1 0.1935 0.0371 0.2210 0.7867 115.5 27.2 1,128 
mushroom 0.0533 0.0141 0.0149 0.9522 2,369.7 5.1 12,121.8 0.0536 0.0003 0.0257 0.9537 71.1 3.8 9,812.5 
nursery 0.4559 0.0405 0.4432 0.4037 2,849.9 3.8 4,587.8 0.1825 0.0122 0.2404 0.5216 384.3 8.4 2,471.2 
optdigits 0.0213 0.0886 0.0408 0.9640 1,815.2 15.8 6,181.8 0.0362 0.0275 0.0459 0.9769 308 28.9 7,602.8 
ozone1hr 0.0407 0.0092 0.0526 0.0211 755.9 2,144 0.0288 0.0000 0.0289 0.0008 2.3 1,446.5 
ozone8hr 0.0528 0.0162 0.0715 0.1756 912.1 2.9 2,254.7 0.0707 0.0000 0.0715 0.0500 3.7 2.4 1,511.7 
page-blocks 0.0841 0.0304 0.0900 0.5503 1,356 1.1 885.5 0.0622 0.0071 0.0634 0.7760 63.1 5.5 412.3 
pendigits 0.0349 0.1431 0.0512 0.9478 3,097.3 7.3 3,353 0.0206 0.0585 0.0247 0.9894 651.9 14.2 1,627.5 
phoneme 0.1714 0.1063 0.2737 0.3469 1,851.4 1.4 888 0.1716 0.0188 0.1761 0.6671 151.8 271.5 
satimage 0.0936 0.0588 0.1408 0.8029 2,397.9 5.1 3,973.8 0.1178 0.0245 0.1261 0.8765 220.1 23.2 2,527.5 
segment 0.0202 0.0738 0.0377 0.9666 693.1 4.2 769.6 0.0472 0.0260 0.0597 0.9630 105.5 9.7 295.8 
shuttle 0.0021 0.0482 0.0021 0.9903 10,766 2.1 8,727.9 0.0276 0.0021 0.0279 0.9904 495.3 3,235.4 
sick 0.0420 0.0102 0.0425 0.5828 949.3 1.2 1,497.7 0.0255 0.0021 0.0257 0.7512 31.2 7.3 1,066.4 
texture 0.0176 0.0697 0.0291 0.9760 1,944.4 7.1 4,398.6 0.0279 0.0304 0.0367 0.9886 347.7 17.2 3,380.2 
titanic 0.6769 0.0344 0.6770 0.0000 389 1.4 247.8 0.2113 0.0052 0.2135 0.0085 17 4.8 109.5 
waveform 0.1333 0.0939 0.2180 0.6563 1,859.2 9.1 3,174 0.1861 0.0051 0.1886 0.6782 62.6 14.6 1,633.2 
zip 0.2692 0.0200 0.4352 0.3777 3,511.1 12.2 39,168.5 0.2466 0.0068 0.3477 0.4587 540.2 16.2 123,283.5 
Standard CHC IS+FSMemetic IS+FS
TrainingTestingInstancesFeaturesTimeTrainingTestingInstancesFeaturesTime
DataseterrorStorageerrorselectedselected(s)errorStorageerrorselectedselected(s)
adult 0.2060 0.0133 0.2090 0.4376 16,609.1 3.7 65,207.2 0.1824 0.0003 0.1850 0.3936 489.5 63,582.9 
euthyroid 0.0235 0.0180 0.0335 0.7732 935 2.4 2,402.4 0.0293 0.0009 0.0301 0.7470 20.7 5.5 1,068.4 
hypo 0.0216 0.0171 0.0279 0.7599 1,006.5 1.7 1,380.4 0.0837 0.0022 0.0899 0.7989 29.4 7.3 840.5 
isolet 0.1629 0.1199 0.2511 0.7485 2,725.4 10.5 4,515.5 0.2149 0.0562 0.2388 0.8299 638 21 4,478.4 
krkopt 0.8335 0.0416 0.8331 0.0329 6,294.1 3,419.4 0.6460 0.0317 0.6569 0.2028 1,265.5 3.8 1,940.6 
krvskp 0.1224 0.0313 0.1254 0.7307 743.7 4.6 2,304.2 0.0823 0.0042 0.0884 0.8714 40.9 10.2 889.3 
letter 0.0999 0.1470 0.1419 0.8736 6,831.4 6.2 5,921.1 0.0786 0.1229 0.0943 0.9521 3,539 10 5,748.6 
magic04 0.1540 0.0730 0.2207 0.4510 6,244.2 3,786 0.1663 0.0103 0.1690 0.5915 418.4 4.2 1,242.9 
mfeat-fac 0.0197 0.0575 0.0370 0.9632 736.1 30.4 5,529.1 0.0621 0.0175 0.0760 0.9559 130 52.2 6,306.9 
mfeat-fou 0.0964 0.0696 0.1585 0.8111 755.7 12.6 1,591.9 0.2028 0.0164 0.2085 0.8061 96.5 23.2 1,920.9 
mfeat-kar 0.0296 0.0664 0.0465 0.9493 670.7 11.4 1,303.8 0.0721 0.0322 0.0940 0.9565 157 24.2 1,663.3 
mfeat-mor 0.2397 0.1529 0.3645 0.5346 590.1 2.8 243.6 0.2742 0.0390 0.3170 0.6019 78.4 5.4 107.5 
mfeat-pix 0.0171 0.0909 0.0355 0.9660 700.7 56.1 6,770.7 0.0493 0.0338 0.0695 0.9671 173.2 84.5 8,306.5 
mfeat-zer 0.1217 0.1176 0.2045 0.7610 682.2 14.6 1,526.1 0.1935 0.0371 0.2210 0.7867 115.5 27.2 1,128 
mushroom 0.0533 0.0141 0.0149 0.9522 2,369.7 5.1 12,121.8 0.0536 0.0003 0.0257 0.9537 71.1 3.8 9,812.5 
nursery 0.4559 0.0405 0.4432 0.4037 2,849.9 3.8 4,587.8 0.1825 0.0122 0.2404 0.5216 384.3 8.4 2,471.2 
optdigits 0.0213 0.0886 0.0408 0.9640 1,815.2 15.8 6,181.8 0.0362 0.0275 0.0459 0.9769 308 28.9 7,602.8 
ozone1hr 0.0407 0.0092 0.0526 0.0211 755.9 2,144 0.0288 0.0000 0.0289 0.0008 2.3 1,446.5 
ozone8hr 0.0528 0.0162 0.0715 0.1756 912.1 2.9 2,254.7 0.0707 0.0000 0.0715 0.0500 3.7 2.4 1,511.7 
page-blocks 0.0841 0.0304 0.0900 0.5503 1,356 1.1 885.5 0.0622 0.0071 0.0634 0.7760 63.1 5.5 412.3 
pendigits 0.0349 0.1431 0.0512 0.9478 3,097.3 7.3 3,353 0.0206 0.0585 0.0247 0.9894 651.9 14.2 1,627.5 
phoneme 0.1714 0.1063 0.2737 0.3469 1,851.4 1.4 888 0.1716 0.0188 0.1761 0.6671 151.8 271.5 
satimage 0.0936 0.0588 0.1408 0.8029 2,397.9 5.1 3,973.8 0.1178 0.0245 0.1261 0.8765 220.1 23.2 2,527.5 
segment 0.0202 0.0738 0.0377 0.9666 693.1 4.2 769.6 0.0472 0.0260 0.0597 0.9630 105.5 9.7 295.8 
shuttle 0.0021 0.0482 0.0021 0.9903 10,766 2.1 8,727.9 0.0276 0.0021 0.0279 0.9904 495.3 3,235.4 
sick 0.0420 0.0102 0.0425 0.5828 949.3 1.2 1,497.7 0.0255 0.0021 0.0257 0.7512 31.2 7.3 1,066.4 
texture 0.0176 0.0697 0.0291 0.9760 1,944.4 7.1 4,398.6 0.0279 0.0304 0.0367 0.9886 347.7 17.2 3,380.2 
titanic 0.6769 0.0344 0.6770 0.0000 389 1.4 247.8 0.2113 0.0052 0.2135 0.0085 17 4.8 109.5 
waveform 0.1333 0.0939 0.2180 0.6563 1,859.2 9.1 3,174 0.1861 0.0051 0.1886 0.6782 62.6 14.6 1,633.2 
zip 0.2692 0.0200 0.4352 0.3777 3,511.1 12.2 39,168.5 0.2466 0.0068 0.3477 0.4587 540.2 16.2 123,283.5 
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