Research Article
A Hybrid Genetic Algorithm with a Knowledge-Based Operator for Solving the Job Shop Scheduling Problems
Table 2
Experimental results.
| Instance name | Size | BKS | Proposed HGA | HGAPSA | PGA | MMIA | MA | HGA | HGA | Param | LSGA | HGA | AIS | Grasp | HGA | BS | RCS | Best | RD (%) | Ave. | Worst | 2012 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2000 | 2001 | 1999 | 1996 |
| FT06 | 6 × 6 | 55 | 55 | 0.00 | 55 | 55 | — | 55 | 55 | 55 | — | 55 | 55 | 55 | 55 | — | 55 | 55 | — | 55 | FT20 | 20 × 5 | 1165 | 1165 | 0.00 | 1174 | 1178 | — | 1196 | — | 1165 | — | 1175 | 1165 | 1209 | 1192 | — | 1169 | 1165 | — | 1165 | LA01 | 10 × 5 | 666 | 666 | 0.00 | 666 | 666 | — | 666 | 666 | 666 | 666 | 666 | 666 | — | — | 666 | 666 | 666 | 666 | 666 | LA02 | 10 × 5 | 655 | 655 | 0.00 | 657.5 | 666 | — | 655 | 655 | 655 | 655 | 655 | 655 | — | — | 655 | 655 | — | 704 | 655 | LA03 | 10 × 5 | 597 | 597 | 0.00 | 597.7 | 604 | — | 617 | 597 | 597 | 617 | 603 | 597 | — | — | 597 | 604 | — | 650 | 597 | LA04 | 10 × 5 | 590 | 590 | 0.00 | 590 | 590 | — | 607 | 590 | 590 | 606 | 590 | 590 | — | — | 590 | 590 | — | 620 | 590 | LA05 | 10 × 5 | 593 | 593 | 0.00 | 593 | 593 | — | 593 | 593 | 593 | 593 | 593 | 593 | — | — | 593 | 593 | — | 593 | 593 | LA06 | 15 × 5 | 926 | 926 | 0.00 | 926 | 926 | — | 926 | 926 | 926 | 926 | 926 | 926 | — | — | 926 | 926 | 926 | 926 | 926 | LA07 | 15 × 5 | 890 | 890 | 0.00 | 890 | 890 | — | 890 | 890 | 890 | 897 | 890 | 890 | — | — | 890 | 890 | — | 890 | 890 | LA08 | 15 × 5 | 863 | 863 | 0.00 | 863 | 863 | — | 863 | 863 | 863 | 863 | 863 | 863 | — | — | 863 | 863 | — | 863 | 863 | LA09 | 15 × 5 | 951 | 951 | 0.00 | 951 | 951 | — | 951 | 951 | 951 | 951 | 951 | 951 | — | — | 951 | 951 | — | 951 | 951 | LA10 | 15 × 5 | 958 | 958 | 0.00 | 958 | 958 | — | 958 | 958 | 958 | 958 | 958 | 958 | — | — | 958 | 958 | — | 958 | 958 | LA11 | 20 × 5 | 1222 | 1222 | 0.00 | 1222 | 1222 | — | 1222 | 1222 | 1222 | 1222 | 1222 | 1222 | — | — | — | 1222 | 1222 | 1222 | 1222 | LA12 | 20 × 5 | 1039 | 1039 | 0.00 | 1039 | 1039 | — | 1039 | — | 1039 | 1039 | 1039 | 1039 | — | — | — | 1039 | — | 1039 | 1039 | LA13 | 20 × 5 | 1150 | 1150 | 0.00 | 1150 | 1150 | — | 1150 | 1150 | 1150 | 1150 | 1150 | 1150 | — | — | — | 1150 | — | 1150 | 1150 | LA14 | 20 × 5 | 1292 | 1292 | 0.00 | 1292 | 1292 | — | 1292 | — | 1292 | 1292 | 1292 | 1292 | — | — | — | 1292 | — | 1292 | 1292 | LA15 | 20 × 5 | 1207 | 1207 | 0.00 | 1207 | 1207 | — | 1207 | 1207 | 1207 | — | 1207 | 1207 | — | — | — | 1207 | — | 1207 | 1207 | LA16 | 10 × 10 | 945 | 946 | 0.11 | 946.2 | 947 | — | 994 | — | 945 | — | 945 | 945 | 959 | 959 | 945 | 946 | 945 | 988 | 945 | LA17 | 10 × 10 | 784 | 784 | 0.00 | 786.4 | 787 | — | 793 | 784 | 784 | — | 784 | 784 | 792 | 792 | 785 | 784 | — | 827 | 784 | LA18 | 10 × 10 | 848 | 848 | 0.00 | 848.8 | 852 | — | 860 | — | 848 | — | 848 | 848 | 857 | 857 | 848 | 848 | — | 881 | 848 | LA19 | 10 × 10 | 842 | 842 | 0.00 | 844.4 | 850 | — | 873 | 857 | 844 | — | 851 | 842 | 860 | 860 | 848 | 842 | — | 882 | 848 | LA20 | 10 × 10 | 902 | 907 | 0.55 | 907 | 907 | — | 912 | — | 907 | — | 907 | 907 | 907 | 907 | 907 | 907 | — | 948 | 907 | LA21 | 15 × 10 | 1046 | 1050 | 0.38 | 1055 | 1061 | — | 1146 | 1088 | — | — | 1067 | 1046 | 1114 | 1097 | — | 1091 | 1058 | 1154 | 1069 | LA22 | 15 × 10 | 927 | 927 | 0.00 | 937.1 | 943 | — | 1007 | — | — | — | 941 | 935 | 989 | 980 | — | 960 | — | 985 | 937 | LA23 | 15 × 10 | 1032 | 1032 | 0.00 | 1032 | 1032 | — | 1033 | — | — | — | 1032 | 1032 | 1035 | 1032 | — | 1032 | — | 1051 | 1032 | LA24 | 15 × 10 | 935 | 943 | 0.86 | 950.5 | 956 | — | 1012 | — | — | — | 957 | 953 | 1032 | 1001 | — | 978 | — | 992 | 942 | LA25 | 15 × 10 | 977 | 984 | 0.72 | 992.3 | 1000 | — | 1067 | — | — | — | 993 | 986 | 1047 | 1031 | 1022 | 1028 | — | 1073 | 981 | LA26 | 20 × 10 | 1218 | 1218 | 0.00 | 1218 | 1218 | — | 1323 | — | — | — | 1218 | 1218 | 1307 | 1295 | — | 1271 | — | 1269 | 1218 | LA27 | 20 × 10 | 1235 | 1255 | 1.62 | 1257 | 1261 | — | 1359 | — | — | — | 1265 | 1256 | 1350 | 1306 | — | 1320 | — | 1316 | 1285 | LA28 | 20 × 10 | 1216 | 1217 | 0.08 | 1221 | 1225 | — | 1369 | — | — | — | 1233 | 1232 | 1312 | 1302 | 1277 | 1293 | — | 1373 | 1216 | LA29 | 20 × 10 | 1152 | 1179 | 2.34 | 1189 | 1204 | — | 1322 | — | — | — | 1182 | 1196 | 1311 | 1280 | 1248 | 1293 | — | 1252 | 1208 | LA30 | 20 × 10 | 1355 | 1355 | 0.00 | 1355 | 1355 | 1355 | 1437 | — | — | — | 1355 | 1355 | 1451 | 1406 | — | 1368 | — | 1435 | 1355 | LA31 | 30 × 10 | 1784 | 1784 | 0.00 | 1784 | 1784 | 1790 | 1844 | 1784 | — | — | 1784 | 1784 | 1784 | 1784 | — | 1784 | 1784 | 1784 | 1784 | LA32 | 30 × 10 | 1850 | 1850 | 0.00 | 1850 | 1850 | 1860 | 1907 | — | — | — | 1850 | 1850 | 1850 | 1850 | — | 1850 | — | 1850 | 1850 | LA33 | 30 × 10 | 1719 | 1719 | 0.00 | 1719 | 1719 | 1719 | — | — | — | — | 1719 | 1719 | 1745 | 1719 | — | 1719 | — | 1719 | 1719 | LA34 | 30 × 10 | 1721 | 1721 | 0.00 | 1721 | 1721 | 1725 | — | — | — | — | 1721 | 1721 | 1784 | 1758 | — | 1753 | — | 1780 | 1721 | LA35 | 30 × 10 | 1888 | 1888 | 0.00 | 1888 | 1888 | 1895 | — | — | — | — | 1888 | 1888 | 1958 | 1888 | 1903 | 1888 | — | 1888 | 1888 | LA36 | 15 × 15 | 1268 | 1294 | 2.05 | 1300 | 1307 | 1279 | — | — | — | — | 1292 | 1279 | 1358 | 1357 | 1323 | 1334 | 1292 | 1401 | 1292 | LA37 | 15 × 15 | 1397 | 1418 | 1.50 | 1431 | 1436 | 1408 | — | — | — | — | 1418 | 1408 | 1517 | 1494 | — | 1457 | — | 1503 | 1411 | LA38 | 15 × 15 | 1196 | 1222 | 2.17 | 1230 | 1238 | 1219 | — | — | — | — | 1231 | 1219 | 1362 | 1338 | 1274 | 1267 | — | 1297 | 1278 | LA39 | 15 × 15 | 1233 | 1249 | 1.30 | 1250 | 1251 | 1246 | — | — | — | — | 1251 | 1246 | 1391 | 1343 | 1270 | 1290 | — | 1369 | 1233 | LA40 | 15 × 15 | 1222 | 1233 | 0.90 | 1238 | 1243 | 1241 | — | — | — | — | 1246 | 1241 | 1323 | 1311 | 1258 | 1259 | — | 1347 | 1247 |
| Average relative deviation (%) | 0.35 | | | 0.7 | 3.4 | 0.32 | 0.04 | 0.49 | 0.65 | 0.41 | 5.41 | 4.07 | 1.61 | 1.8 | 0.38 | 4.23 | 0.63 |
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BKS: best known solution. RD: relative deviation in percentage. Ave.: average of 10 independent runs. Optimal solution achieved by our HGA.
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