Mathematical Optimization Model for Truck Scheduling in a Distribution Center with a Mixed Service-Mode Dock Area

Table 4

Obtained results for the future scenario of ice cream in C shift.

	Number of platforms	Makespan (min)	Lower bound (min)	Gap (%)	CPU time (sec)
CPLEX	1	737.00	442.57	39.95	9000.00
	2	363.90	249.10	31.55	9000.00
	3	263.90	245.10	7.12	9000.00
	4	245.10	245.10	0.00	1.26
	5	245.10	245.10	0.00	1.74
	6	245.10	245.10	0.00	1.69
	7	245.10	245.10	0.00	1.86
	9	245.10	245.10	0.00	3.16
	12	245.10	245.10	0.00	3.03
	15	245.10	245.10	0.00	4.56
	18	245.10	245.10	0.00	5.1
	19	245.10	245.10	0.00	5.7
	21	245.10	245.10	0.00	11.29
Gurobi	1	737.00	515.40	30.07	9000.00
	2	363.90	245.10	32.65	9000.00
	3	264.30	245.10	7.26	9000.00
	4	245.10	245.10	0.00	1.74
	5	245.10	245.10	0.00	3.25
	6	245.10	245.10	0.00	1.03
	7	245.10	245.10	0.00	2.13
	9	245.10	245.10	0.00	3.35
	12	245.10	245.10	0.00	4.78
	15	245.10	245.10	0.00	5.37
	18	245.10	245.10	0.00	5.13
	19	245.10	245.10	0.00	10.4
	21	245.10	245.10	0.00	8.01

Source: owner.