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Table 2:
Summary of the performance of standard CHC instance and feature selection method in terms of testing error and storage reduction. Additionally, the measure, the number of selected instances and features, and the execution time are shown.
Standard CHC IS+FS
TrainingTestingInstancesFeaturesTime
DataseterrorStorageerrorselectedselected(s)
anneal 0.0075 0.0242 0.0135 0.9791 189.6 6.1 4,459.5 
arrhythmia 0.1681 0.0428 0.3045 0.4520 122.8 39.9 6,178.5 
audiology 0.1152 0.0505 0.2864 0.7086 64.4 14.8 565.2 
autos 0.0843 0.0361 0.1950 0.7967 84.9 5.7 379.2 
breast-cancer 0.2361 0.0170 0.2643 0.1879 32.8 2.0 108.7 
cancer 0.0364 0.0366 0.0536 0.8503 103.9 2.0 479.9 
car 0.1704 0.0593 0.2581 0.1445 362.0 4.0 5,909.7 
card 0.1374 0.0071 0.1551 0.6764 118.2 1.7 1,702.0 
dermatology 0.0161 0.0317 0.0278 0.9160 51.5 6.9 457.2 
ecoli 0.1396 0.0648 0.2606 0.5909 68.7 2.0 128.1 
euthyroid 0.0199 0.0171 0.0285 0.7670 1,070.7 2.0 46,704.7 
german 0.2391 0.0228 0.2920 0.1953 287.0 4.3 5,691.1 
glass 0.1311 0.0840 0.3381 0.5705 55.4 2.6 59.3 
glass-g2 0.0728 0.0514 0.1875 0.5013 30.9 2.2 29.8 
heart 0.1399 0.0343 0.1555 0.4618 36.1 3.0 103.0 
heart-c 0.1449 0.0179 0.1567 0.5399 35.7 3.0 176.4 
hepatitis 0.1243 0.0196 0.2267 0.1259 20.3 2.4 33.9 
horse 0.1747 0.0360 0.3778 0.2710 122.8 5.6 918.6 
hypothyroid 0.0259 0.0136 0.0387 0.6878 1,342.0 1.0 43,644.6 
ionosphere 0.0383 0.0211 0.1086 0.6932 75.0 3.0 405.8 
kr vs. kp 0.0588 0.0335 0.0574 0.7243 850.7 4.3 43,518.6 
led24 0.2544 0.0438 0.3150 0.5573 37.0 5.1 88.4 
liver 0.2791 0.0573 0.4294 0.0373 77.1 1.4 109.1 
lrs 0.0525 0.0210 0.1283 0.7951 178.4 5.7 2,858.6 
lymphography 0.0866 0.0350 0.2786 0.4861 23.5 7.6 85.2 
mammography 0.1704 0.0153 0.2010 0.4473 157.6 1.5 1,377.7 
mfeat-fac 0.0162 0.0323 0.0480 0.9526 805.7 15.6 110,028.5 
mfeat-fou 0.0775 0.0535 0.1740 0.8150 779.0 9.4 30,632.1 
mfeat-kar 0.0188 0.0603 0.0540 0.9420 694.6 10.0 24,215.8 
mfeat-mor 0.2453 0.1174 0.4045 0.4844 633.9 2.0 4,538.4 
mfeat-pix 0.0227 0.0510 0.0525 0.9481 805.5 27.4 147,955.8 
mfeat-zer 0.1125 0.0853 0.2220 0.7404 708.4 10.2 28,596.6 
new-thyroid 0.0655 0.0243 0.0762 0.7570 23.6 1.0 30.4 
optdigits 0.0234 0.0949 0.0537 0.9426 2,477.0 12.4 366,791.4 
ozone1hr 0.0288 0.0049 0.0289 0.0353 802.9 1.0 39,693.0 
ozone8hr 0.0547 0.0079 0.0648 0.1028 992.1 1.3 44,038.2 
page-blocks 0.0557 0.0350 0.0629 0.5580 1,721.3 1.0 37,852.7 
phoneme 0.1419 0.0886 0.2743 0.3224 2,154.9 1.0 32,530.4 
pima 0.2230 0.0383 0.2895 0.2272 212.2 1.0 666.7 
primary-tumor 0.5317 0.0395 0.5940 0.2346 54.1 5.1 277.1 
promoters 0.0052 0.0318 0.2300 0.5829 15.9 22.9 116.7 
satimage 0.0848 0.0553 0.1530 0.8068 2,812.0 4.1 221,031.8 
segment 0.0130 0.0527 0.0338 0.9650 694.2 3.0 14,693.4 
sick 0.0336 0.0101 0.0371 0.5061 1,131.8 1.0 44,622.2 
soybean 0.0447 0.0405 0.0647 0.9234 177.5 11.5 4,182.8 
texture 0.0151 0.0698 0.0351 0.9701 2,341.6 5.9 188,695.8 
tic-tac-toe 0.3007 0.0183 0.3000 0.1165 142.0 1.0 806.7 
titanic 0.3037 0.0642 0.3099 0.0000 557.3 1.8 5,615.6 
vehicle 0.1568 0.0745 0.3298 0.5539 292.1 3.5 1,935.6 
vote 0.0436 0.0076 0.0442 0.8112 47.8 1.0 226.8 
vowel 0.0392 0.1514 0.4222 0.5444 337.2 4.0 1,710.3 
waveform 0.1094 0.0826 0.2300 0.6294 2,066.6 7.2 127,755.2 
wine 0.0130 0.0270 0.0706 0.8355 21.3 2.7 44.0 
yeast 0.4548 0.0788 0.5831 0.1559 456.4 1.8 2,590.6 
zoo 0.0330 0.0444 0.0800 0.8342 15.4 4.2 18.5 
Standard CHC IS+FS
TrainingTestingInstancesFeaturesTime
DataseterrorStorageerrorselectedselected(s)
anneal 0.0075 0.0242 0.0135 0.9791 189.6 6.1 4,459.5 
arrhythmia 0.1681 0.0428 0.3045 0.4520 122.8 39.9 6,178.5 
audiology 0.1152 0.0505 0.2864 0.7086 64.4 14.8 565.2 
autos 0.0843 0.0361 0.1950 0.7967 84.9 5.7 379.2 
breast-cancer 0.2361 0.0170 0.2643 0.1879 32.8 2.0 108.7 
cancer 0.0364 0.0366 0.0536 0.8503 103.9 2.0 479.9 
car 0.1704 0.0593 0.2581 0.1445 362.0 4.0 5,909.7 
card 0.1374 0.0071 0.1551 0.6764 118.2 1.7 1,702.0 
dermatology 0.0161 0.0317 0.0278 0.9160 51.5 6.9 457.2 
ecoli 0.1396 0.0648 0.2606 0.5909 68.7 2.0 128.1 
euthyroid 0.0199 0.0171 0.0285 0.7670 1,070.7 2.0 46,704.7 
german 0.2391 0.0228 0.2920 0.1953 287.0 4.3 5,691.1 
glass 0.1311 0.0840 0.3381 0.5705 55.4 2.6 59.3 
glass-g2 0.0728 0.0514 0.1875 0.5013 30.9 2.2 29.8 
heart 0.1399 0.0343 0.1555 0.4618 36.1 3.0 103.0 
heart-c 0.1449 0.0179 0.1567 0.5399 35.7 3.0 176.4 
hepatitis 0.1243 0.0196 0.2267 0.1259 20.3 2.4 33.9 
horse 0.1747 0.0360 0.3778 0.2710 122.8 5.6 918.6 
hypothyroid 0.0259 0.0136 0.0387 0.6878 1,342.0 1.0 43,644.6 
ionosphere 0.0383 0.0211 0.1086 0.6932 75.0 3.0 405.8 
kr vs. kp 0.0588 0.0335 0.0574 0.7243 850.7 4.3 43,518.6 
led24 0.2544 0.0438 0.3150 0.5573 37.0 5.1 88.4 
liver 0.2791 0.0573 0.4294 0.0373 77.1 1.4 109.1 
lrs 0.0525 0.0210 0.1283 0.7951 178.4 5.7 2,858.6 
lymphography 0.0866 0.0350 0.2786 0.4861 23.5 7.6 85.2 
mammography 0.1704 0.0153 0.2010 0.4473 157.6 1.5 1,377.7 
mfeat-fac 0.0162 0.0323 0.0480 0.9526 805.7 15.6 110,028.5 
mfeat-fou 0.0775 0.0535 0.1740 0.8150 779.0 9.4 30,632.1 
mfeat-kar 0.0188 0.0603 0.0540 0.9420 694.6 10.0 24,215.8 
mfeat-mor 0.2453 0.1174 0.4045 0.4844 633.9 2.0 4,538.4 
mfeat-pix 0.0227 0.0510 0.0525 0.9481 805.5 27.4 147,955.8 
mfeat-zer 0.1125 0.0853 0.2220 0.7404 708.4 10.2 28,596.6 
new-thyroid 0.0655 0.0243 0.0762 0.7570 23.6 1.0 30.4 
optdigits 0.0234 0.0949 0.0537 0.9426 2,477.0 12.4 366,791.4 
ozone1hr 0.0288 0.0049 0.0289 0.0353 802.9 1.0 39,693.0 
ozone8hr 0.0547 0.0079 0.0648 0.1028 992.1 1.3 44,038.2 
page-blocks 0.0557 0.0350 0.0629 0.5580 1,721.3 1.0 37,852.7 
phoneme 0.1419 0.0886 0.2743 0.3224 2,154.9 1.0 32,530.4 
pima 0.2230 0.0383 0.2895 0.2272 212.2 1.0 666.7 
primary-tumor 0.5317 0.0395 0.5940 0.2346 54.1 5.1 277.1 
promoters 0.0052 0.0318 0.2300 0.5829 15.9 22.9 116.7 
satimage 0.0848 0.0553 0.1530 0.8068 2,812.0 4.1 221,031.8 
segment 0.0130 0.0527 0.0338 0.9650 694.2 3.0 14,693.4 
sick 0.0336 0.0101 0.0371 0.5061 1,131.8 1.0 44,622.2 
soybean 0.0447 0.0405 0.0647 0.9234 177.5 11.5 4,182.8 
texture 0.0151 0.0698 0.0351 0.9701 2,341.6 5.9 188,695.8 
tic-tac-toe 0.3007 0.0183 0.3000 0.1165 142.0 1.0 806.7 
titanic 0.3037 0.0642 0.3099 0.0000 557.3 1.8 5,615.6 
vehicle 0.1568 0.0745 0.3298 0.5539 292.1 3.5 1,935.6 
vote 0.0436 0.0076 0.0442 0.8112 47.8 1.0 226.8 
vowel 0.0392 0.1514 0.4222 0.5444 337.2 4.0 1,710.3 
waveform 0.1094 0.0826 0.2300 0.6294 2,066.6 7.2 127,755.2 
wine 0.0130 0.0270 0.0706 0.8355 21.3 2.7 44.0 
yeast 0.4548 0.0788 0.5831 0.1559 456.4 1.8 2,590.6 
zoo 0.0330 0.0444 0.0800 0.8342 15.4 4.2 18.5 
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