[Retracted] The Customs Clearance Efficiency of Guangdong-Hong Kong Land Transportation Based on BP Neural Network Algorithm

Table 3

Optimization numerical results of optimal mechanism setting level problem.

Quality of service	Optimal service capacity	Optimal cost	Customs declaration satisfaction rate
			Index	Erlang	Well-distributed	Fixed length
0.71	6	18.32	0.821	0.824	0.847	0.866
0.77	8	47.71	0.836	0.833	0.855	0.871
0.83	8	50.21	0.901	0.847	0.869	0.892
0.91	7	61.21	0.922	0.901	0.889	0.904
0.90	9	66.98	0.968	0.928	0.904	0.923