Solving a Closed-Loop Location-Inventory-Routing Problem with Mixed Quality Defects Returns in E-Commerce by Hybrid Ant Colony Optimization Algorithm

Table 5

Results with different L (cost: million CNY; iterations: times).

		Cost			Iterations
		Mean	Std. dev.	C.V.	Mean	Std. dev.	C.V.
50	ACO	31.99	0.72	0.0224	159.72	33.39	0.21
	HACO	33.07	1.22	0.0369	123.7	25.96	0.2098
100	ACO	31.9	0.67	0.0209	159.8	30.73	0.19
	HACO	32.88	1.09	0.033	121.63	18.91	0.1555
150	ACO	32.22	0.74	0.0229	157.19	40.58	0.2581
	HACO	33.02	1.05	0.0319	121.14	23.2	0.1915
200	ACO	32.11	0.8	0.0251	167.66	38.61	0.23
	HACO	32.9	1.12	0.0339	120.8	22.05	0.1825
250	ACO	32.08	0.87	0.0271	164.08	34.16	0.21
	HACO	33.1	1.09	0.033	121.87	28.95	0.2376

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