Optimization of Gantry Crane Scheduling in Container Sea-Rail Intermodal Transport Yard

Table 7

Performance comparison between CPLEX and Genetic Algorithm.

Instance			CPLEX		Genetic algorithm		GAP(%)
No.				CPU(s)		CPU(s)
1	2	4	6	0.06	6	0.08	0.00
2	2	6	25	0.48	26	0.26	4.00
3	2	8	32	2.66	34	0.34	6.25
4	4	8	14	7.79	14	0.39	0.00
5	4	10	26	50.85	28	1.65	7.69
6	4	12	28	1800.00	30	2.24	7.14
7	6	12	34	381.52	35	4.81	2.94
8	6	14	26	565.75	27	1.68	3.85
9	6	16	N/A	1800.00	35	3.72	N/A
10	8	16	70	1508.85	72	5.88	2.85
11	8	18	N/A	1800.00	46	9.18	N/A
12	8	20	N/A	1800.00	62	12.76	N/A
13	10	20	87	1800.00	88	29.86	1.15
14	10	30	N/A	1800.00	42	43.26	N/A
15	10	40	N/A	1800.00	79	52.01	N/A
Average			17.89	1007.86	31.27	11.21	3.59