Research Article
Chip Attach Scheduling in Semiconductor Assembly
Table 4
Comparison of the total setup time using heuristics and
-learning.
| Dataset no. | WSPT | MWSPT | RA | LFM-MWSPT | LFM-RA | LWF | Q-learning |
| 1 | 0.8133 | 0.8497 | 0.3283 | 0.7231 | 0.3884 | 0.3895 | 1.0000 | 2 | 0.8333 | 1.3000 | 0.4358 | 0.7564 | 0.5263 | 0.4094 | 1.0000 | 3 | 0.8712 | 1.1633 | 0.4207 | 0.6361 | 0.4937 | 0.4298 | 1.0000 | 4 | 1.1280 | 0.7123 | 0.4629 | 0.8516 | 0.5139 | 0.4318 | 1.0000 | 5 | 0.9629 | 1.3121 | 0.4179 | 0.8597 | 0.5115 | 0.3873 | 1.0000 | 6 | 0.7489 | 1.0393 | 0.4104 | 0.7489 | 0.4542 | 0.4074 | 1.0000 | 7 | 1.7868 | 2.2182 | 0.8223 | 1.4069 | 1.0125 | 0.4174 | 1.0000 | 8 | 0.6456 | 0.8508 | 0.4055 | 0.6694 | 0.5053 | 0.3795 | 1.0000 | 9 | 0.9245 | 0.9946 | 0.5013 | 0.7821 | 0.6694 | 0.4163 | 1.0000 | 10 | 1.1025 | 1.7875 | 0.6703 | 1.0371 | 0.9079 | 0.4894 | 1.0000 | 11 | 0.9973 | 1.3655 | 0.3994 | 0.9686 | 0.5129 | 0.4066 | 1.0000 | 12 | 0.7904 | 1.1111 | 0.4419 | 0.6195 | 0.5081 | 0.4258 | 1.0000 |
| Average | 0.9671 | 1.2254 | 0.4764 | 0.8383 | 0.5837 | 0.4158 | 1.0000 |
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