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Table 17:
Summary of the performance of instance selection methods in terms of G-mean and storage reduction. Additionally, specificity, sensitivity, the number of selected instances and features, and the execution time are shown.
Standard CHC IS+FSMemetic IS+FS
DatasetStorageSpecificitySensitivityG-meanInstancesFeaturesTimeStorageSpecificitySensitivityG-meanInstancesFeaturesTime
selectedselected(s)selectedselected(s)
abalone19 0.0788 0.6031 0.5333 0.4453 1,273.5 0.9 18,711.3 0.0513 0.8521 0.5917 0.6551 205.5 4.0 4,531.9 
abalone9-18 0.0522 0.9535 0.3850 0.5641 171.5 2.0 725.3 0.0090 0.8608 0.6800 0.7167 13.7 4.1 185.1 
breast-cancer 0.0182 0.7210 0.5896 0.6429 35.2 2.0 105.7 0.0319 0.6415 0.4488 0.5212 13.8 8.5 48.6 
cancer 0.0357 0.9496 0.9481 0.9484 101.1 2.0 489.7 0.0049 0.9494 0.9656 0.9571 5.7 4.9 158.8 
carG 0.0814 0.9259 1.0000 0.9622 337.6 6.0 5,334.8 0.0081 0.9536 1.0000 0.9765 25.4 7.9 1,185.0 
ecoliCP-IM 0.0127 1.0000 0.9520 0.9752 17.6 1.0 35.2 0.0038 0.9941 0.9722 0.9826 4.2 1.2 18.1 
ecoliM 0.0417 0.8835 0.9050 0.8929 50.0 1.7 110.5 0.0131 0.9053 0.8831 0.8920 11.7 2.3 38.0 
ecoliMU 0.0515 0.9186 0.7300 0.7703 54.6 2.0 132.4 0.0133 0.8918 0.8717 0.8782 8.3 3.4 42.5 
ecoliOM 0.0313 0.9744 0.7500 0.7626 36.8 1.8 100.1 0.0102 0.9810 0.9000 0.9328 5.7 3.8 43.1 
euthyroid 0.0194 0.9836 0.8737 0.9268 1,099.4 2.2 48,478.5 0.0006 0.9690 0.9113 0.9393 17.4 4.0 4,769.9 
german 0.0221 0.6714 0.6823 0.6748 257.2 4.7 5,619.1 0.0095 0.6898 0.6517 0.6658 38.1 12.9 866.1 
glassBWFP 0.0447 0.8788 0.7915 0.8282 38.8 2.0 49.9 0.0258 0.8788 0.8450 0.8568 14.4 3.1 25.4 
glassBWNFP 0.0569 0.7696 0.7307 0.7404 46.9 2.1 56.3 0.0471 0.8275 0.8515 0.8334 20.3 3.9 28.9 
glassContainers 0.0299 0.9652 0.9000 0.8849 25.9 2.0 49.1 0.0224 0.9850 0.9000 0.8924 8.1 4.8 25.9 
glassNW 0.0207 0.9073 0.8742 0.8873 24.3 1.5 44.8 0.0165 0.9478 0.9239 0.9339 7.3 3.8 21.6 
glassTableware 0.0228 0.9802 1.0000 0.9899 19.8 2.0 43.4 0.0181 0.9757 0.6000 0.5901 7.7 4.0 30.6 
glassVWFP 0.0637 0.8566 0.3600 0.3925 35.8 3.1 49.6 0.0608 0.8619 0.5600 0.5728 22.3 4.7 32.7 
haberman 0.0539 0.5731 0.4969 0.5146 44.6 1.0 60.0 0.0244 0.6707 0.6951 0.6463 10.1 2.0 29.9 
hepatitis 0.0328 0.8186 0.7005 0.7067 22.3 3.9 51.3 0.0384 0.7872 0.5562 0.5719 9.8 10.5 22.0 
ionosphere 0.0161 0.8849 0.8696 0.8741 71.7 2.4 379.9 0.0195 0.9157 0.8755 0.8921 21.2 9.7 148.7 
new-thyroidT 0.0241 0.9281 0.8500 0.8787 23.4 1.0 30.0 0.0155 0.9836 0.9750 0.9783 5.0 3.0 16.8 
optdigitsZ 0.0309 0.9966 0.9782 0.9874 2,500.9 4.0 303,467.3 0.0003 0.9957 0.9855 0.9906 18.7 6.2 19,748.1 
ozone1hr 0.0767 0.9625 0.4198 0.6293 1,017.7 12.4 73,768.2 0.0016 0.8795 0.6468 0.7491 28.5 8.8 4,075.4 
ozone8hr 0.0591 0.9326 0.5412 0.7060 1,045.7 9.3 66,213.3 0.0036 0.8270 0.7374 0.7791 50.0 10.8 4,369.1 
phoneme 0.0900 0.7636 0.6175 0.6859 2,189.7 1.0 32,666.7 0.0277 0.8084 0.8485 0.8280 224.1 3.0 6,230.8 
pima 0.0408 0.7265 0.6561 0.6863 225.8 1.0 682.8 0.0202 0.7504 0.7020 0.7239 26.9 4.1 179.0 
satimageF 0.0844 0.9377 0.6455 0.7776 2,842.5 6.2 248,620.3 0.0108 0.8676 0.8596 0.8634 154.9 14.5 23,639.9 
satimageT 0.0806 0.9429 0.6005 0.7517 2,850.3 5.9 248,727.6 0.0142 0.8717 0.8571 0.8641 184.2 16.1 23,442.0 
segmentO 0.0295 0.9959 0.9700 0.9828 582.1 2.0 11,327.9 0.0022 0.9970 0.9876 0.9922 15.4 5.4 2,044.5 
sick 0.0228 0.9739 0.8488 0.9074 1,349.9 1.8 54,264.8 0.0060 0.9618 0.9278 0.9442 74.3 8.8 5,966.7 
splice-EI 0.0297 0.9565 0.9647 0.9606 1,272.7 8.0 144,123.1 0.0001 0.9104 0.9886 0.9487 9.2 4.2 20,152.1 
Splice-IE 0.0372 0.9224 0.9419 0.9317 1,356.1 9.4 168,459.7 0.0003 0.8281 0.9787 0.8993 19.0 4.4 21,556.8 
tic-tac-toe 0.1243 0.8029 0.7872 0.7906 187.3 5.1 917.6 0.0943 0.9145 0.9202 0.9165 104.6 7.0 366.8 
titanic 0.1162 0.6403 0.6360 0.5551 580.0 2.0 5,399.3 0.0014 0.8148 0.5991 0.6980 5.6 4.0 1,414.4 
vehicleVAN 0.0394 0.9448 0.8906 0.9165 200.5 2.7 1,632.0 0.0156 0.9449 0.9617 0.9527 28.6 7.4 376.5 
vowelZ 0.0414 0.9789 0.8333 0.8881 184.6 2.0 1,221.1 0.0101 0.9678 0.7333 0.8270 20.9 4.1 307.2 
yeastCYT-POX 0.0483 0.9460 0.5500 0.5912 65.8 2.5 221.5 0.0270 0.9222 0.6000 0.6522 22.5 4.3 93.7 
yeastEXC 0.0596 0.9696 0.5583 0.7193 356.1 1.8 2,715.6 0.0075 0.9515 0.6417 0.7589 17.8 4.5 583.2 
yeastME1 0.0777 0.9777 0.7583 0.8550 321.4 2.6 2,495.4 0.0055 0.9749 0.8417 0.9007 15.3 4.0 544.7 
yeastME2 0.0510 0.9447 0.4259 0.5467 425.2 1.3 2,455.0 0.0108 0.8596 0.7090 0.7671 27.2 4.2 556.9 
Standard CHC IS+FSMemetic IS+FS
DatasetStorageSpecificitySensitivityG-meanInstancesFeaturesTimeStorageSpecificitySensitivityG-meanInstancesFeaturesTime
selectedselected(s)selectedselected(s)
abalone19 0.0788 0.6031 0.5333 0.4453 1,273.5 0.9 18,711.3 0.0513 0.8521 0.5917 0.6551 205.5 4.0 4,531.9 
abalone9-18 0.0522 0.9535 0.3850 0.5641 171.5 2.0 725.3 0.0090 0.8608 0.6800 0.7167 13.7 4.1 185.1 
breast-cancer 0.0182 0.7210 0.5896 0.6429 35.2 2.0 105.7 0.0319 0.6415 0.4488 0.5212 13.8 8.5 48.6 
cancer 0.0357 0.9496 0.9481 0.9484 101.1 2.0 489.7 0.0049 0.9494 0.9656 0.9571 5.7 4.9 158.8 
carG 0.0814 0.9259 1.0000 0.9622 337.6 6.0 5,334.8 0.0081 0.9536 1.0000 0.9765 25.4 7.9 1,185.0 
ecoliCP-IM 0.0127 1.0000 0.9520 0.9752 17.6 1.0 35.2 0.0038 0.9941 0.9722 0.9826 4.2 1.2 18.1 
ecoliM 0.0417 0.8835 0.9050 0.8929 50.0 1.7 110.5 0.0131 0.9053 0.8831 0.8920 11.7 2.3 38.0 
ecoliMU 0.0515 0.9186 0.7300 0.7703 54.6 2.0 132.4 0.0133 0.8918 0.8717 0.8782 8.3 3.4 42.5 
ecoliOM 0.0313 0.9744 0.7500 0.7626 36.8 1.8 100.1 0.0102 0.9810 0.9000 0.9328 5.7 3.8 43.1 
euthyroid 0.0194 0.9836 0.8737 0.9268 1,099.4 2.2 48,478.5 0.0006 0.9690 0.9113 0.9393 17.4 4.0 4,769.9 
german 0.0221 0.6714 0.6823 0.6748 257.2 4.7 5,619.1 0.0095 0.6898 0.6517 0.6658 38.1 12.9 866.1 
glassBWFP 0.0447 0.8788 0.7915 0.8282 38.8 2.0 49.9 0.0258 0.8788 0.8450 0.8568 14.4 3.1 25.4 
glassBWNFP 0.0569 0.7696 0.7307 0.7404 46.9 2.1 56.3 0.0471 0.8275 0.8515 0.8334 20.3 3.9 28.9 
glassContainers 0.0299 0.9652 0.9000 0.8849 25.9 2.0 49.1 0.0224 0.9850 0.9000 0.8924 8.1 4.8 25.9 
glassNW 0.0207 0.9073 0.8742 0.8873 24.3 1.5 44.8 0.0165 0.9478 0.9239 0.9339 7.3 3.8 21.6 
glassTableware 0.0228 0.9802 1.0000 0.9899 19.8 2.0 43.4 0.0181 0.9757 0.6000 0.5901 7.7 4.0 30.6 
glassVWFP 0.0637 0.8566 0.3600 0.3925 35.8 3.1 49.6 0.0608 0.8619 0.5600 0.5728 22.3 4.7 32.7 
haberman 0.0539 0.5731 0.4969 0.5146 44.6 1.0 60.0 0.0244 0.6707 0.6951 0.6463 10.1 2.0 29.9 
hepatitis 0.0328 0.8186 0.7005 0.7067 22.3 3.9 51.3 0.0384 0.7872 0.5562 0.5719 9.8 10.5 22.0 
ionosphere 0.0161 0.8849 0.8696 0.8741 71.7 2.4 379.9 0.0195 0.9157 0.8755 0.8921 21.2 9.7 148.7 
new-thyroidT 0.0241 0.9281 0.8500 0.8787 23.4 1.0 30.0 0.0155 0.9836 0.9750 0.9783 5.0 3.0 16.8 
optdigitsZ 0.0309 0.9966 0.9782 0.9874 2,500.9 4.0 303,467.3 0.0003 0.9957 0.9855 0.9906 18.7 6.2 19,748.1 
ozone1hr 0.0767 0.9625 0.4198 0.6293 1,017.7 12.4 73,768.2 0.0016 0.8795 0.6468 0.7491 28.5 8.8 4,075.4 
ozone8hr 0.0591 0.9326 0.5412 0.7060 1,045.7 9.3 66,213.3 0.0036 0.8270 0.7374 0.7791 50.0 10.8 4,369.1 
phoneme 0.0900 0.7636 0.6175 0.6859 2,189.7 1.0 32,666.7 0.0277 0.8084 0.8485 0.8280 224.1 3.0 6,230.8 
pima 0.0408 0.7265 0.6561 0.6863 225.8 1.0 682.8 0.0202 0.7504 0.7020 0.7239 26.9 4.1 179.0 
satimageF 0.0844 0.9377 0.6455 0.7776 2,842.5 6.2 248,620.3 0.0108 0.8676 0.8596 0.8634 154.9 14.5 23,639.9 
satimageT 0.0806 0.9429 0.6005 0.7517 2,850.3 5.9 248,727.6 0.0142 0.8717 0.8571 0.8641 184.2 16.1 23,442.0 
segmentO 0.0295 0.9959 0.9700 0.9828 582.1 2.0 11,327.9 0.0022 0.9970 0.9876 0.9922 15.4 5.4 2,044.5 
sick 0.0228 0.9739 0.8488 0.9074 1,349.9 1.8 54,264.8 0.0060 0.9618 0.9278 0.9442 74.3 8.8 5,966.7 
splice-EI 0.0297 0.9565 0.9647 0.9606 1,272.7 8.0 144,123.1 0.0001 0.9104 0.9886 0.9487 9.2 4.2 20,152.1 
Splice-IE 0.0372 0.9224 0.9419 0.9317 1,356.1 9.4 168,459.7 0.0003 0.8281 0.9787 0.8993 19.0 4.4 21,556.8 
tic-tac-toe 0.1243 0.8029 0.7872 0.7906 187.3 5.1 917.6 0.0943 0.9145 0.9202 0.9165 104.6 7.0 366.8 
titanic 0.1162 0.6403 0.6360 0.5551 580.0 2.0 5,399.3 0.0014 0.8148 0.5991 0.6980 5.6 4.0 1,414.4 
vehicleVAN 0.0394 0.9448 0.8906 0.9165 200.5 2.7 1,632.0 0.0156 0.9449 0.9617 0.9527 28.6 7.4 376.5 
vowelZ 0.0414 0.9789 0.8333 0.8881 184.6 2.0 1,221.1 0.0101 0.9678 0.7333 0.8270 20.9 4.1 307.2 
yeastCYT-POX 0.0483 0.9460 0.5500 0.5912 65.8 2.5 221.5 0.0270 0.9222 0.6000 0.6522 22.5 4.3 93.7 
yeastEXC 0.0596 0.9696 0.5583 0.7193 356.1 1.8 2,715.6 0.0075 0.9515 0.6417 0.7589 17.8 4.5 583.2 
yeastME1 0.0777 0.9777 0.7583 0.8550 321.4 2.6 2,495.4 0.0055 0.9749 0.8417 0.9007 15.3 4.0 544.7 
yeastME2 0.0510 0.9447 0.4259 0.5467 425.2 1.3 2,455.0 0.0108 0.8596 0.7090 0.7671 27.2 4.2 556.9 
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