A Modified Priority-Based Encoding for Design of a Closed-Loop Supply Chain Network Using a Discrete League Championship Algorithm

Table 3

Size and scale of sample problems.

Scale of the problem	Problem no.	# the potential locations for plants	# the potential locations for collection centers	# the potential locations for disposal centers	# the potential locations for customer zones
Small	1	3	2	2	10
	2	4	3	3	15
	3	5	4	3	20
	4	7	5	4	25
	5	8	6	5	30
	6	10	8	7	35
	7	12	8	7	40
Medium	8	15	9	8	45
	9	18	10	9	50
	10	21	12	10	55
	11	25	15	12	60
	12	30	20	15	70
	13	35	25	18	80
	14	40	32	20	90
Large	15	45	37	24	100
	16	50	42	29	120
	17	60	48	33	140
	18	70	53	38	160
	19	80	57	42	180
	20	90	60	45	200
	21	100	65	50	220