Research Article
Note on a Single-Machine Scheduling Problem with Sum of Processing Times Based Learning and Ready Times
Table 1
The performance of the branch-and-bound and the heuristic algorithms.
| | | | Branch-and-bound algorithm | HA | Node | CPU time (sec.) | Error | Mean | Max | Mean | Max | Mean | Max |
| 12 | −0.05 | | 17 | 123 | 0.0008 | 0.0156 | 0.0017 | 0.0176 | 0.25 | 158 | 1672 | 0.0048 | 0.0047 | 0.0012 | 0.0187 | 0.50 | 374 | 4711 | 0.0058 | 0.0625 | 0.0010 | 0.0172 | 0.75 | 666 | 17380 | 0.0092 | 0.2500 | 0.0001 | 0.0053 | 1.00 | 213 | 7429 | 0.0033 | 0.0938 | 0.0001 | 0.0048 | −0.10 | | 9 | 55 | 0.0009 | 0.0156 | 0.0022 | 0.0079 | 0.25 | 244 | 2207 | 0.0053 | 0.0312 | 0.0014 | 0.0121 | 0.50 | 881 | 14373 | 0.0116 | 0.1562 | 0.0005 | 0.0142 | 0.75 | 486 | 17778 | 0.0062 | 0.1875 | 0.0003 | 0.0119 | 1.00 | 102 | 1447 | 0.0020 | 0.0312 | 0.0002 | 0.0083 | −0.15 | | 10 | 119 | 0.0011 | 0.0156 | 0.0030 | 0.0125 | 0.25 | 346 | 3263 | 0.0070 | 0.0469 | 0.0019 | 0.0387 | 0.50 | 1169 | 23592 | 0.0148 | 0.2656 | 0.0005 | 0.0186 | 0.75 | 180 | 3484 | 0.0025 | 0.0312 | 0.0002 | 0.0096 | 1.00 | 70 | 841 | 0.0008 | 0.0156 | 0.0003 | 0.0129 | −0.20 | | 13 | 224 | 0.0019 | 0.0156 | 0.0004 | 0.0151 | 0.25 | 678 | 8671 | 0.0125 | 0.1562 | 0.0022 | 0.0215 | 0.50 | 440 | 5711 | 0.0059 | 0.0781 | 0.0008 | 0.0185 | 0.75 | 110 | 1852 | 0.0017 | 0.0312 | 0.0005 | 0.0121 | 1.00 | 48 | 269 | 0.0014 | 0.0156 | 0.0000 | 0.0045 |
| 16 | −0.05 | | 48 | 719 | 0.0066 | 0.0781 | 0.0009 | 0.0039 | 0.25 | 5431 | 131044 | 0.3069 | 5.5469 | 0.0006 | 0.0086 | 0.50 | 38532 | 1411457 | 0.8681 | 31.8281 | 0.0008 | 0.0116 | 0.75 | 15999 | 1107504 | 0.3728 | 25.7812 | 0.0001 | 0.0040 | 1.00 | 870 | 16849 | 0.0211 | 0.3750 | 0.0001 | 0.0046 | −0.10 | | 64 | 673 | 0.0081 | 0.0781 | 0.0022 | 0.0083 | 0.25 | 13367 | 859718 | 0.5369 | 29.1875 | 0.0012 | 0.0184 | 0.50 | 21592 | 535276 | 0.4861 | 10.6562 | 0.0002 | 0.0118 | 0.75 | 1925 | 54132 | 0.0526 | 1.5469 | 0.0003 | 0.0094 | 1.00 | 261 | 2075 | 0.0076 | 0.0469 | 0.0001 | 0.0033 | −0.15 | | 66 | 369 | 0.0078 | 0.0469 | 0.0038 | 0.0180 | 0.25 | 19822 | 712421 | 0.6286 | 14.0938 | 0.0010 | 0.0092 | 0.50 | 54197 | 2918302 | 1.1222 | 53.7500 | 0.0002 | 0.0066 | 0.75 | 1801 | 109046 | 0.0478 | 2.9531 | 0.0001 | 0.0050 | 1.00 | 197 | 2892 | 0.0062 | 0.0781 | 0.0000 | 0.0017 | −0.20 | | 171 | 4282 | 0.0184 | 0.3906 | 0.0038 | 0.0107 | 0.25 | 27159 | 725798 | 0.8030 | 16.3594 | 0.0015 | 0.0208 | 0.50 | 10999 | 712605 | 0.2536 | 16.3750 | 0.0005 | 0.0127 | 0.75 | 320 | 4508 | 0.0087 | 0.1406 | 0.0000 | 0.0040 | 1.00 | 109 | 2101 | 0.0031 | 0.0625 | 0.0001 | 0.0068 |
| | −0.05 | | 158 | 1761 | 0.0253 | 0.2812 | 0.0009 | 0.0041 | | 0.25 | 337842 | 7781036 | 23.2809 | 468.5000 | 0.0007 | 0.0062 | | 0.50 | 1676257 | 59366260 | 39.0003 | 1204.8750 | 0.0001 | 0.0048 | | 0.75 | 27610 | 1036801 | 0.7211 | 26.7188 | 0.0001 | 0.0033 | | 1.00 | 3704 | 182198 | 0.0926 | 4.0625 | 0.0000 | 0.0026 | | −0.10 | | 147 | 1100 | 0.0265 | 0.1875 | 0.0020 | 0.0064 | | 0.25 | 525486 | 18272556 | 29.7661 | 931.7031 | 0.0009 | 0.0076 | | 0.50 | 1104005 | 58152896 | 25.7080 | 1319.7812 | 0.0001 | 0.0049 | | 0.75 | 4288 | 121994 | 0.1178 | 3.4219 | 0.0000 | 0.0033 | | 1.00 | 1286 | 24316 | 0.0040 | 0.8594 | 0.0000 | 0.0000 | | −0.15 | | 357 | 5056 | 0.0590 | 0.7500 | 0.0027 | 0.0127 | 20 | 0.25 | 1394787 | 35061512 | 54.7898 | 1016.5000 | 0.0010 | 0.0096 | | 0.50 | 98518 | 3076627 | 2.7577 | 100.0469 | 0.0000 | 0.0030 | | 0.75 | 5682 | 391725 | 0.1486 | 9.4219 | 0.0000 | 0.0000 | | 1.00 | 1104 | 76371 | 0.0314 | 2.1250 | 0.0001 | 0.0028 | | −0.20 | | 458 | 8952 | 0.0720 | 1.1719 | 0.0040 | 0.0105 | | 0.25 | 2498437 | 44522213 | 77.4317 | 1213.4531 | 0.0012 | 0.0095 | | 0.50 | 11662 | 493749 | 0.3208 | 12.7500 | 0.0002 | 0.0052 | | 0.75 | 543 | 5827 | 0.0161 | 0.1406 | 0.0001 | 0.0035 | | 1.00 | 317 | 5588 | 0.0097 | 0.1562 | 0.0000 | 0.0000 |
| 24 | −0.05 | | 350 | 9729 | 0.0876 | 2.1250 | 0.0009 | 0.0036 | 0.25 | 8305284 | 76961550 | 829.5079 | 6601.4219 | 0.0004 | 0.0046 | 0.50 | 6064502 | 66135367 | 216.9024 | 2553.3438 | 0.0002 | 0.0044 | 0.75 | 430956 | 16808123 | 13.7014 | 507.8281 | 0.0000 | 0.0000 | 1.00 | 14553 | 288343 | 0.4666 | 6.4531 | 0.0000 | 0.0000 | −0.10 | | 616 | 9924 | 0.1622 | 2.3750 | 0.0017 | 0.0046 | 0.25 | 16901968 | 99754077 | 1432.9100 | 8322.3906 | 0.0008 | 0.0078 | 0.50 | 3412720 | 78241619 | 119.5013 | 2819.4062 | 0.0000 | 0.0043 | 0.75 | 173689 | 11582237 | 4.8338 | 279.3125 | 0.0000 | 0.0028 | 1.00 | 2911 | 82129 | 0.1058 | 2.7500 | 0.0000 | 0.0000 | −0.15 | | 562 | 6245 | 0.1494 | 1.5312 | 0.0027 | 0.0102 | 0.25 | 9840876 | 79790848 | 558.4099 | 7802.9844 | 0.0006 | 0.0040 | 0.50 | 370863 | 13626535 | 13.3567 | 479.3594 | 0.0000 | 0.0047 | 0.75 | 3971 | 53339 | 0.1498 | 2.1406 | 0.0000 | 0.0000 | 1.00 | 2929 | 194770 | 0.1219 | 8.4688 | 0.0000 | 0.0000 | −0.20 | | 2043 | 67463 | 0.5033 | 15.7969 | 0.0044 | 0.0122 | 0.25 | 10286808 | 99187625 | 504.8521 | 7724.5156 | 0.0005 | 0.0076 | 0.50 | 30923 | 562049 | 0.9963 | 14.6250 | 0.0000 | 0.0042 | 0.75 | 1685 | 28692 | 0.0706 | 1.0625 | 0.0001 | 0.0029 | 1.00 | 431 | 5241 | 0.0184 | 0.1719 | 0.0000 | 0.0021 |
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